BD Diesel Performance 1030395 User manual

22 September 2015 PN#1030395 TorqLoc (I-00208)
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
1
B
BD D T To or rq qL Lo oc c
Torque Convertor Control System
Part# 1030395
Installation Manual for the following applications:
BD Brakes for Dodge, Ford and Chevrolet
Pac Brake for Dodge & Ford
Jacobs E-Brake for 1994-98 Dodge 6BTA 12 Valve
* Please read this instruction manual before starting installation *

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
2
T A B L E O F C O N T E N T S
WELCOME........................................................................................................................................................................2
The BD TORQLOC Advantage.........................................................................................................................................2
Operating the BD TORQLOC............................................................................................................................................3
Transmission Quirks .........................................................................................................................................................4
Compatibility With Other Exhaust Brake Brands...............................................................................................................4
Adjusting For Application...................................................................................................................................................5
Wiring the TORQLOC (with an exhaust brake).................................................................................................................5
Testing The TORQLOC (with an exhaust brake)..............................................................................................................9
Testing the TORQLOC (without an exhaust brake)........................................................................................................11
Dodge “TRANS” Relay Bypass (1996-2000)...................................................................................................................12
BD TORQLOC WIRING DIAGRAMS - ...........................................................................................................................13
∙ BD BRAKES: 1995-2003 FORD 7.3L / 1999-2005 DODGE 24V..................................................................................13
∙ BD BRAKES: 1994-1998 DODGE / 1988-94 FORD IDI / CHEVY 6.2-6.5L..................................................................14
∙ PAC BRAKE: DODGE 12V...........................................................................................................................................14
∙ PAC BRAKE: 1995-97 FORD POWERSTROKE..........................................................................................................15
∙ JACOBS E-BRAKE: DODGE 12 Valve........................................................................................................................16
∙ PAC BRAKE: DODGE ISB 24 VALVES........................................................................................................................17
∙ JACOBS BRAKE: DODGE ISB 24 VALVES.................................................................................................................17
∙ US GEAR D-CELERATOR BRAKES............................................................................................................................17
∙ NO EXHAUST BRAKE INSTALLED .............................................................................................................................17
AUTOLOC vs. TORQLOC ..............................................................................................................................................18
Questions?......................................................................................................................................................................19
WELCOME
Thank you for purchasing the BD TorqLoc Kit. This manual is to aid you with your
installation and operation of the unit. We strongly suggest that you retain this
manual for any future reference.
NOTE: For trucks with a Jacobs Exhaust Brake system for the Dodge ISB 24
valve application, and all US Gear D-Celerators, this brake cannot be hooked
up to the module. Follow the instructions that are for “Without Exhaust
Brake” on page 10.
The BD TORQLOC Advantage
Exhaust brake usage can cause high temperatures in the automatic transmission
due to torque convertor slippage if a lockup device is not used. Only 10% to 80% of
the retarding force is transferred through the fluid coupling of most torque
convertors.
The BD TorqLoc commands the lock-up clutch of the torque convertor to stay
engaged when the BD Exhaust Brake is activated. This allows up to 100% of the
retarding force to be transferred while in 3rd and 4th gear. Also, transmission oil
temperatures will remain low because of little or no slippage occurring in the
convertor in these gears.

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
3
Operating the BD TORQLOC
The TorqLoc works off of a lighted 3-position toggle switch and will only take effect
when the vehicle is above a set speed (approximately 25mph to 30mph) and the
torque convertor lock-up clutch is engaged. The lock-up clutch usually engages
when the vehicle is cruising with little throttle action.
On most vehicles, the lock-up clutch can be manually engaged by applying pressure
to the accelerator pedal until lock-up engages, then lift foot off the accelerator.
Accelerator pedal pressure is also required after shifting out of or into overdrive to
reengage the lock-up. The TorqLoc is programmed to disengage the lock-up
clutch once the vehicle’s speed drops below a preset speed.
When the 3-Position toggle switch is in the Down (Green light) position, the
TorqLoc module will keep the convertor lock-up clutch engaged when the exhaust
brake valve is activated (brake switch turned on and accelerator pedal at idle
position). (NOTE: The Down position has no operation if the TorqLoc module is
not wired up to an exhaust brake.) The Middle (White light) position is the
off/neutral position for the TorqLoc module. The Up (Red light) position will
manually keep the convertor lock-up clutch engaged.
For proper operation of the Dodge transmission, the lock-up clutch must be
disengaged before the transmission will shift out of overdrive into 3rd gear. The
TorqLoc module compensates for this by disengaging the lock-up clutch when the
"O/D" button is activated to turn the overdrive off while the exhaust brake is turned
on. To reactivate the lock-up, apply pressure to the accelerator pedal until lock-up
engages, then lift foot off of the accelerator pedal.
Also with Dodge trucks, to prevent excess slippage with the lock-up clutch, the
turbo boost pressure should be equal to or less than 1psi for every 100 engine rpm
(18psi or less at 1800rpm) when engine rpm is below 1800rpm.
On all vehicles, the transmission should be shifted out of overdrive if speed drops
below 40 mph. If not, there could be a transmission shudder as the vehicle speed
decreases until it reaches the set speed that the TorqLoc unit will allow the torque
convertor lock-up clutch to disengage.
With Dodge trucks, the module has an Overdrive inverter option that will disengage
the Overdrive when the truck starts to move after being started up. This will prevent
possible transmission shudder on trucks with raised horsepower and will allow for
the transmission to lock-up the clutch in third gear before reaching overdrive when
starting to up-shift from a dead stop, allowing cooler fluid temperatures when driving
at “city” speeds. This is an option and does not need to be connected for proper
operation of the TorqLoc module, ignore all references to the “Inverter” if this option
is not desired.
Note: The OD inverter is not compatible with 2005 Dodges. A BD Overdrive Cutout
PN 1031350 may be purchased separately to control OD on a 2005 Dodge

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
4
Transmission Quirks
Some Dodges built between the production dates of 09/95 to 04/96 have had
computers that the programming for the transmission control has caused some
lock-up control problems and/or will cause the TorqLoc not to operate correctly. If
this occurs, the computer can be "re-flashed" to current specifications at most
Dodge dealerships, labor charges (usually 1/2 hour) may apply.
Some Dodges that are of the 1999-up model years and are of California
specifications may require the Transmission Relay to be reinstalled back into it's
socket, which would have been removed in the "1996-up Dodge "TRANS" Relay
Bypass" section of this manual.
Note that if you have installed the unit on a Ford and you have a higher autoloc
unlock speed in overdrive or drive, you most likely have a coast clutch problem in
the transmission. A BD Pressureloc can help to prevent this.
Other items installed that may effect the operation of the transmission may have an
effect on the operation of the TorqLoc (i.e. auxiliary transmissions). Please make
this known if contacting the BD Technical Service Department.
Compatibility With Other Exhaust Brake Brands
For the Down (Green light) position, where the TorqLoc module will keep the
convertor lock-up clutch engaged when the exhaust brake valve is activated (brake
switch turned on and accelerator pedal at idle position), most of the provided
diagrams, instructions and parts relate to the installation and operation of this unit in
conjunction with any BD Exhaust Brake.
In this manual, we have provided some diagrams and additional instructions for
some of the other systems that we have had access to their diagrams. An
installation in conjunction with any other system should only be done with instruction
from one of our BD Technicians, with wiring diagrams and/or schematics provided
to them. Additional lead-time, parts and/or labor may be required.
For Jacobs E-Brakes installed on Dodge trucks with the 24 valve ISB engines and
all US Gear D-Celerator applications, ignore hooking up the TorqLoc to the brake
wiring, and follow the wiring instructions as if there was no exhaust brake installed.
NOTE - Pac Brake exhaust brakes only:If the truck has a 6BTA 12 valve
engine with 60lb springs, remove the Pac Brake valve and drill out the
pressure relief hole from 9/32” to 31/64”. This step is NOT required for the 24
Valve engines or newer models.

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
5
Adjusting For Application
Before installing, open the box up by removing two screws on bottom of module.
On the opposite end of the circuit board from the terminals, there is selection of 8
"dip" switches. These dip-switches control the speed that the TorqLoc module will
disconnect the lock-up clutch. We have provided settings for the module to
disconnect the lock-up at approximately 25mph to 30mph. If you find that the set
speed is too high or low for the vehicle, phone our technical service department for
alternative settings.
NOTE: To ensure proper function of the dip switches, flip each dip switch back and
forth once before setting them, even if the dip switches are already set for the
application it’s being installed on.
The “LED” (Light Emitting Diode) on the circuit board will show a Red light when the
TorqLoc is functioning. Once the unit is installed, test drive the vehicle to make
sure the light comes on and then turns off at the set speed.
Wiring the TORQLOC (with an exhaust brake)
Disconnect the ground (Negative) terminals on all vehicle batteries before starting
installation. The following instructions are divided per wire going up to each
individual terminal labeled on the TorqLoc module, and the terminals in these
instructions will be numbered starting from the top at the +12V terminal. Follow
along with the diagrams following the written instructions for ease of installation.
After wiring, additional instructions will follow for 1996-up Dodges. For 1999-03
Ford PowerStrokes, remove the driver’s side front fender well for access to
computer harness. When possible, check for continuity through all Posi-Tap™
connectors after you have installed them. We suggest soldering and shrink tubing
all connections, but we also provide Posi-Taps™for your convenience.

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
6
+12V
#1
TorqLoc power lead (Red wire)
Using a test light or multi-meter, find a key switched +12 Volt power source in the
wiring harness under the dash. Connect the Red wire to it using a black Posi-Tap™
and connect the other end of the Red wire to the +12v terminal on the module.
GND
#2
TorqLoc ground (Black wire)
Connect to any bolt/screw under the dash that is a good ground.
LOCATION OF DODGE CUMMINS ECM & HARNESSES
VSS
#3
Vehicle Speed Sensor (Green wire)
Locate the VSS (Vehicle Speed Sensor) wire in the vehicles computer wiring
harness (see chart). Run the TorqLoc Green wire to the VSS wire and cut off any
excess, leaving some slack. Connect to the VSS wire using a gray Posi-Tap™, or,
solder the Green wire to the VSS wire and protect it from the elements (i.e. liquid
electrical tape).
DODGE
(5.9L)
2004-2005
Pin 11 at ECM C2 50 pin (Dark Green w/Yellow tracer)
1996-2003
Pin 27 at PCM C2 (White w/Orange Tracer)
1994-1995
Pin 47 on PCM (White w/Orange Tracer)
FORD
(7.3L)
1995-2003
Pin 58 at ECM (Gray w/Black Tracer)
1990-1994
Pin 3at ECM (Gray w/Black Tracer)
CHEVY
(6.5L)
1994-2000
Pin 15 (Dark Green) at VSS Buffer beside the ECM
(Behind glove box)
1992-1993
Light Blue w/Black Tracer at VSS Buffer by ECM

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
7
BPS
#4
Brake Power Signal (Brown Wire)
The module is looking for the 12-volt positive signal that triggers the exhaust brake
to activate. Use the chart below and wiring diagrams at the back of this manual to
make the correct connection.
Brake System
Connection
BD Brake (except Ford PowerStroke) &
Pac Brake (Dodge Application)
Posi-Tap™onto the wire leading from the
DFVI to the exhaust brake solenoid.
BD Brake (Ford PowerStroke)
Cut the wire leading from the Throttle
Relay to the Control Valve for the exhaust
brake valve. Using a Blue Butt
connector, attach the Brown wire to the
wire coming from the Throttle
Switch/Relay (See “#9 Engine Brake” on
the page 9 for the connection to the wire
going to the Control Valve for the exhaust
brake.)
Pac Brake (1994-97 Ford PowerStroke)
Posi-Tap™onto the blue wire running
from the toggle switch to the Vacuum
Control Solenoid.
Jacobs E-Brake (Dodge 6BTA)
Posi-Tap™onto the black wire on the
wire harness at the throttle switch.
O/D SW
#5
Dodge Overdrive Switch (White wire)
For 1994-98 Dodges, locate the Lt. Green w/Orange Tracer wire, or, the Orange
w/White on 1999-up Dodges, in the harness above the master brake cylinder
(NOTE: The same harness that the VSS wire is usually found) or PCM C3 Pin 13.
For 2004 Dodges, locate the Dark Green wire at the ECM on the driver side of the
engine. Pin 13 on the ECM C2 connector (50 pin). 2005 Dodge trucks do not have
an OD off wire and do not use this function.
Cut the White wire to length, while leaving some slack. Connect to the overdrive
wire using a gray Posi-Tap™connector, or solder the White wire to O/D wire and
protect from elements (i.e. liquid electrical tape)

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
8
PCM & TCC
#6-7
Converter Control (Yellow #6 and Blue #7 wire))
Locate the vehicle’s Torque Convertor Control (TCC) as described in the following
chart. Cut the applicable wire and attach one side of a blue Posi-Lock connector to
the wire leading back to the transmission, and, attach one side of another blue Posi-
Lock connector to the wire heading to the vehicles computer (ECM or PCM).
Connect the TorqLoc Yellow wire to the PCM (#6) terminal on the module, and,
connect the Blue wire to the TCC (#7) terminal. Run the Yellow and Blue wire to
the cut Convertor Control wire and cut off leaving some slack. Attach the Yellow
wire to the blue Posi-Lock heading to vehicle’s computer. Attach the Blue wire to
the blue Posi-Lock heading back to the transmission. Instead of connectors, you
could also solder the wires.
NOTE: Some vehicles have more than one wiring harness on transmission.
Make/Model
Year
Wire Color
Pin #
Location
DODGE
(5.9L)
2004-2005
Y/LB
25
ECM C2 50 Pin Connection
1996-2003
OR/BK
11
PCM C2
1994-1995
OR/BK
54
PCM
FORD
(7.3L)
1999-2003
VT/Y
54
PCM
1995-1997
VT/Y
28
PCM
1990-1994
VT/Y
53
PCM
CHEVY
(6.5L)
1994-2000
Unplug harness from transmission then look inside
plug and identify which wire is going to the “S” pin
(usually Brown)
1992-1993
TAN/BK
“J” on Transmission
INVERTER
#8
Optional Overdrive Disable (Orange Wire)
For 1994-98 Dodges only, connect Orange wire to the Inverter terminal and run it to
the same harness where the O/D Switch and VSS wire were found, cutting of
excess and leaving some slack. Locate the Orange w/White Tracer and using a
gray Posi-Tap™connector or soldering, connect Orange wire to O/D wire.
For 1999-2002 Dodges, if the overdrive inverter option is desired,
flip Dip Switch #8 to the “UP” position, no matter what gear ratio
you set the other switches to.
BRAKE
#9
N/A
This connection is not used in the TorqLoc kit.

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
9
Testing The TORQLOC (with an exhaust brake)
With the module pulled out enough to be easily visible while driving, take the vehicle
for a drive. Turn the brake on and first check that the LED light comes on once the
vehicle has surpassed the set speed. On some Ford trucks the LED will only come
on above the set speed when the throttle is returned to idle. If the LED fails to
illuminate after the set speed, check the dip-switch settings, the VSS wire color and
the connection to that wire, the wire is on the right terminal at the module, and make
sure there is a good power source and ground for the module.
With no traffic around, turn on the exhaust brake then cruise at a constant speed
above the set speed on the module, then let off the throttle. The brake should have
activated and you should feel the hold back. Turn the brake off to make sure the
brake and lock-up clutch disengages. Turn the brake on and cruise again at a
constant speed, then let off the throttle and let the vehicle slow down below the set
speed, making sure the lock-up releases below the set speed. If these situations
fail to occur, then check the wiring to the brake and module, and check terminal
locations on the module.
On Dodges, after starting up the truck and starting drive, the O/D off light should
have illuminated (if that option was hooked up). With the brake turned on, drive
until overdrive is reached then let off the throttle. With the brake and lock-up clutch
engaged, push the overdrive button to check that the lock-up clutch disengages and
the transmission shifts out of overdrive. If this fails to occur, check the O/D wire
color and connection to that wire, and that the wire is on the right terminal at the
module.
If any of the functions still fail to occur, phone our technical service department for
further assistance. If it is necessary to bypass the Torqloc, disconnect the Blue and
Yellow Torqloc wires from the factory TCC wire which was cut to install the Torqloc
& reconnect the factory wires back together.
After final wiring and testing has been done on the vehicle, mark the label on the
module for the application (vehicle and kit part number). Secure module to a
harness or bracket under dash with tie wraps.

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
10
Wiring The TORQLOC (without an exhaust brake)
This includes Jacobs E-Brake for Dodge ISB and US Gear D-Celerator exhaust
brakes:
For those applications where there is no exhaust brake installed, or, where the
automatic feature of the TorqLoc module is not desired or cannot be installed,
follow the same wiring instructions as in the previous pages, except remove the long
section of Brown wire on the 3-Pos. switch that is mentioned in the BPS section
and ignore the chart of where to hook up that long section of Brown wire.
The short section of Brown wire mentioned in the BPS section is still to be
connected to the BPS terminal on the module. NOTE: The Down/Green light and
the Mid/White light positions on the 3-position switch now serve no function. The
Up/Red light position is the only one that has a function, which is to manually keep
the convertor lock-up clutch engaged.

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
11
Testing the TORQLOC (without an exhaust brake)
With the module pulled out enough to be easily visible while driving, take the vehicle
for a drive. Turn the brake on and first check that the LED light comes on once the
vehicle has surpassed the set speed. On some Ford trucks the LED will only come
on above the set speed when the throttle is returned to idle. If the LED fails to
illuminate after the set speed, check the dip-switch settings, the VSS wire color and
the connection to that wire, the wire is on the right terminal at the module, and make
sure there is a good power source and ground for the module.
Cruise at a constant speed above the set speed of the module, turn TorqLoc switch
on to the Up (Red) position and let off the throttle. The lock-up should stay
engaged. Turn TorqLoc switch on to the Middle (White) position and lock-up
clutch should disengage. Cruise again at a constant speed and turn TorqLoc
switch on to the Up (Red) position, then let off the throttle and let the vehicle slow
down below the set speed, making sure the lock-up disengages once below the set
speed. If these situations fail to occur, check the wiring to module, and check
terminal locations on the module.
On Dodges, after starting up the truck and starting drive, the O/D off light should
have illuminated (if that option was hooked up). With the brake turned on, drive
until overdrive is reached then let off the throttle. With the brake and lock-up clutch
engaged, push the overdrive button to check that the lock-up clutch disengages and
the transmission shifts out of overdrive. If this fails to occur, check the O/D wire
color and connection to that wire and the wire in on the right terminal at the module.
If any of the functions still fail to occur, phone our technical service department for
further assistance. If it is necessary to bypass the Torqloc, disconnect the Blue and
Yellow Torqloc wires from the factory TCC wire which was cut to install the Torqloc
& reconnect the factory wires back together.
Note that if you have installed the unit on a Ford and you have a higher autoloc
unlock speed in overdrive than in drive, you most likely have a coast clutch problem
in the transmission. A BD Pressureloc can help to prevent this.
After final wiring and testing has been done on the vehicle, mark the label on the
module for the application (vehicle and kit part number). Secure module to a
harness or bracket under dash with tie wraps.

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
12
Dodge “TRANS” Relay Bypass (1996-2000)
Remove the cover on the Power Distribution Center (PDC) box, behind the driver's
side battery. Replace the "TRANS" relay (see diagrams below, or bottom of PDC
cover) with Copper Jumper.
This is not required on 1999-up California model trucks.
Some trucks may set various transmission codes once the Torqloc is installed. If the
Engine Service Light comes on after operation, try reinstalling the relay, then clear
the fault code from the ECM.
2001-up: These vehicles USUALLY do not require the relay to be removed and
have the jumper wire installed. Please test the installation with the factory relay
installed. If any symptoms occur, remove the relay and install the jumper wire.

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
13
BD TORQLOC WIRING DIAGRAMS -
∙ BD BRAKES: 1995-2003 FORD 7.3L / 1999-2005 DODGE 24V
Pink
Pink

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
14
BD TORQLOC WIRING DIAGRAMS -
∙ BD BRAKES: 1994-1998 DODGE / 1988-94 FORD IDI / CHEVY 6.2-6.5L
∙ PAC BRAKE: DODGE 12V
NOTE: CHEVY TRUCKS WITH A 6.2/6.5L ENGINE
MUST HAVE A LOCK UP TRANSMISSION (ie.
4L60E/4L80E) IN ORDER TO USE THIS SYSTEM.

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
15
BD TORQLOC WIRING DIAGRAMS -
∙ PAC BRAKE: 1995-97 FORD POWERSTROKE

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
16
BD TORQLOC WIRING DIAGRAMS -
∙ JACOBS E-BRAKE:DODGE 12 Valve

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
17
BD TORQLOC WIRING DIAGRAMS -
∙ PAC BRAKE: DODGE ISB 24 VALVES
∙ JACOBS BRAKE: DODGE ISB 24 VALVES
∙ US GEAR D-CELERATOR BRAKES
∙ NO EXHAUST BRAKE INSTALLED

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
18
AUTOLOC vs. TORQLOC
The difference between the AutoLoc and TorqLoc is that the AutoLoc automatically
controls the TCC lock up signal once it receives a power signal from the exhaust
brake switch and the TorqLoc has a manual position, automatic (or AutoLoc
position), and an Off position.
So, in comparing between the AutoLoc and the TorqLoc, the TorqLoc will force the
convertor clutch to lock up & the AutoLoc will only hold an already locked up
convertor clutch. When you ask for an overdrive to third gear shift, the TorqLoc
doesn’t wait for the computer to lock up the clutch, it sends its own signal to the
convertor clutch, and as long as you are A) above the set speed and B) the
transmission is hydraulically correct, [throttle pressure is applied], the TorqLoc will
force a lock up.
The AutoLoc cannot force a lock up, but can only hold it on deceleration. The
Chrysler transmission does not lock up in third gear, unless the overdrive is turned
off. Also, the Chrysler transmission won’t allow an overdrive to third gear downshift
if the TC clutch is locked up. This holds true no matter what system you are using
to hold the TC locked up.
While driving with the overdrive turned off, and the AutoLoc is turned on, the
transmission shifts from first to second to third, and then locks up.
Anytime after the lock up has occurred and you take your foot off the accelerator,
the AutoLoc will turn the exhaust brake on and hold the torque convertor clutch
locked until about 25mph when it will then turn off the torque convertor clutch.
When driving on the freeway in overdrive, the torque convertor clutch will be locked
up and the AutoLoc turned on, if you release the throttle the AutoLoc will apply the
brake and hold the TC clutch lock up.
To increase the amount of retarding horsepower, turn off the overdrive and the
AutoLoc will sense this signal and cut the signal that’s holding the torque convertor
clutch applied, the transmission will then downshift into third gear. At this point you
should apply throttle pressure until the factory computer says everything is okay and
locks up the torque convertor clutch.
As soon as this happens you should remove throttle pressure and the AutoLoc will
turn the exhaust brake on and keep the torque convertor clutch applied until you get
down to about the 25mph mark. The set speed is adjustable, one can set it for a
higher mph, so you don’t have to worry about remembering to turn off the overdrive
or lower if one has 4:10 gears.
Now suppose you’re driving along, overdrive is on, the AutoLoc is on and you need
to make a stop or slow down, but don’t need the extra retarding horsepower of third
gear or you don’t have time to wait for the downshift, applying throttle and waiting
for lockup, (this would all take about 4-6 seconds) and you don’t want the

22 September 2015 TorqLoc# 1030395
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: [phone] | Fax: [phone] | Internet: www.bd-power.com
19
shuddering that would occur when you have a locked up torque convertor clutch &
you’re going to be doing less than 35 mph in overdrive.
You can do any of the four following actions to cancel out the system: 1) turn off the
AutoLoc switch, 2) turn off the overdrive, 3) lightly step on the throttle pedal, or 4)
pull the gearshift lever down into second gear. Turning off the overdrive or the
AutoLoc are the best of the four options.
Now enters the TorqLoc, it should only be used under light throttle applications. No
matter whose torque convertor you are using, the converter clutch has only so much
holding power & if you exceed this you will start to slip the clutch, thereby starting
the demise of your convertor clutch.
An example of when to use the TorqLoc position would be when you are on a
winding road where you are on and off the throttle a great deal and you don’t want
to keep locking and unlocking the convertor clutch. The TorqLoc will hold the
convertor clutch locked up, preventing that from happening.
You must keep in mind, while doing this, that if you apply too much throttle
pressure, especially at the lower rpm band, you may start to slip the convertor
clutch. A general rule of thumb when holding the convertor clutch locked up is no
more that 1 lb of boost for every 100 rpm of engine speed.
Questions?
If you required technical assistance with the installation or operation of this kit,
please contact us at 604-853-6096, Monday to Friday, 8:00am to 5:00 Pacific Time.