Dakota Digital CRC-2000 User manual

[1] MAN #650553:A
This manual covers the aspects of installation, operation, and troubleshooting of the
CRC-2000 “Drive-by-Wire” cruise control.
The CRC-2000 was designed to work with CAN bus GM LS engine/drivetrain packages, as either a complete transplant
from a stock vehicle, or a Connect Cruise, using a GM ECU programmed with US SAE code.
•Works with 2008 and newer GM CAN bus engine/drivetrain packages with US SAE code.
•Requires a 4,000 Pulse Per Mile VSS square wave speed signal.
oGM ECU Speed output or VSS Out, (not VSS High).
oDakota Digital SPD OUT from a control box.
•Mix and match engines, transmissions and ECUs will most likely NOT work.
•Advanced tuning to the ECU could disable the cruise control operation.
•The CRC-2000 is designed to only work with a GM CAN bus computer system.
oNot designed for Ford, Mopar, or aftermarket EFI systems like Holley
Table of Contents
Parts List
Page 2
Connectors and Pin Outs
Page 3
Wiring / J2 Main Harness
Page 4
Wiring / J2 Optional Resistor Wiring
Page 6
Wiring / J2 Clutch Switches
Page 6
Wiring / J2 Brake and LED Relay
Page 7
Wiring / J3 Cruise Handles
Page 9
Wiring / J4 Throttle connections
Page 10
Trouble Shooting
Page 12
Operations
Page 13
Safety Procedures
Page 14
Service / Warranty
Page 16
CRC-2000
Drive-by-Wire Cruise Control System

[2] MAN #650553:A
PARTS LIST
The kit includes the standard parts
Item
Quantity
Description
Part Number
1
1
Cruise Control Module
CRC-2000
2
1
Pedal Interface Harness
250-2766
3
1
Main Power / Input Harness
250-2759
Three cruise handles are offered: two column mount models and a dash mount version.
The column models use a different interface harness than the dash mount model.
The appropriate harness will be supplied with the handle chosen at purchase time.
Part
Style
Mounting
Harness
HND-1
Cut-off style
Requires cutting off original plastic of turn signal
394207
HND-2
Dash Mount
Requires three holes drilled into dash or console
394206
HND-3
<1980 GM turn signal replacement
Replaces older GM turn signal with screw
394207
(The harness 394206 could also be used with four wire GM stock turn signal levers built for cruise, page [9])
The colors will vary some on the 394207, so matching a wire color to color will not always be feasible.
See the wiring diagrams for proper connections to the cruise handles on page [8].
Pedals vary in build and operation. The pin layout must be a single row as shown in the purple pedal plug of
the 250-2766 below. If the pins are turned, or the pedal has a dual row of pins, the CRC-2000 will not function,
and the wiring and cannot be modified “to make work”.
For proper pedal operation, a voltage test can be found on page [12].

[3] MAN #650553:A
CONNECTORS AND PIN OUTS
The CRC-2000 has four connectors on the front that we use.
They are labeled as:
•J1 –Not Used
•J2 –Power/Ground/Input harness
•J3 –Handle/Switch harness
•J4 –Pedal harness
The small connector in the back is not used, but there is a small cutaway for an LED, that can used to observe
operation and limited diagnostics, (see page [12]).
Overall plug colors with the different handle harnesses
Colors of the 394207 may not match exactly as shown below.

[4] MAN #650553:A
STEP BY STEP CONNECTIONS
Connecting Main Harness [J2]
Wire colors
Orange
Ground Output to activate “cruise” indicator on Dakota Digital dash or ground side of LED
Yellow
Clutch Switch triggered by a positive voltage
White
Clutch Switch triggered by a ground signal
Purple
Speed input wire –requiring a 4,000 pulse per mile, square wave signal
Blue
Constant power (hot side of brake pedal can work)
Red
Key on power, accessory or ignition from fuse panel
Black
Chassis ground
White/Brown
Cold side of brake switch
➢When connecting leads to a vehicle, soldering is preferred over crimp connectors.
Pinout of J2 Connector

[5] MAN #650553:A
VSS Pull Up Resistor [J2]
The Purple VSS wire in J2 requires the device sending out a speed signal have, what is called a pull up
voltage. This can be determined to exist by testing the output wire or terminal for DC voltage.
Many ECUs have a 5-volt reference voltage with key the on.
Dakota Digital control boxes do not have a pull up voltage, and the enclosed resistor will need to be added.
Basic Diagram
All Dakota Digital control boxes, (and the GPS-50-2 CRUISE terminal), will need the pull up resistor added, as
long as the control box is being fed a speed signal into the speed input wires.
> The SPD OUT of the control box must be configured to “4K” in the setup for the dash.
> The SPD OUT will NOT generate a signal if the control box is getting speed from a BIM-01-2, or GPS-50-2
connected with the BIM cable.

[6] MAN #650553:A
Cruise Indicator (Orange):
The orange wire produces a negative trigger to operate the cruise indicator on a Dakota Digital VFD3, VHX,
HDX or RTX dash system. The orange wire will connect to “CRUSE”on these control boxes.
The orange wire could also operate the ground side of a LED lamp.
Clutch Switch wires (Yellow and White):
➢Optional –Only for manual transmissions.
➢If using an automatic transmission DO NOT CONNET EITHER WIRE TO ANYTHING.
➢If using a clutch switch that is a ground trigger, DO NOT CONNET the yellow wire to anything.
➢If using a clutch switch that is a positive trigger, DO NOT CONNET the white wire to anything.
Clutch Switch Wiring Examples
Example of clutch
switch mounting.
Special Wiring Notes

[7] MAN #650553:A
Cold Side Brake Wiring (with and without LED tail lights)

[8] MAN #650553:A
Handle Wire Harnesses [J3]
394207 with HND-1 or HND-3
This is a pretty much a plug and play connection.
When pinning the plug of the handle, match the colors of the handle to the letters on the plastic plug.
The Dakota Digital HND-1 and HND-3 can only be used with the 394207 harness.
The colors of the 394207 may vary, and these are the known variants we have seen.

[9] MAN #650553:A
Handle Wire Harnesses [J3]
394206 with HND-2
Possible GM wiring colors to the 394206 harnesses:
Function
394206 Colors
GM Colors
GM Colors
GM Colors
GM Colors
Resume/Accel
Yellow
Yellow
Gray/Black
Green
Dark Gray
Set/Coast
Green
Red
Blue
Blue
Dark Blue
On
Brown
Green
Gray
Gray
Gray
Power in
Red
Blue
Pink
Pink
Pink/Black
The HND-2 colors will match the
colors of the 394206 harness.
The HND-2 cannot be used with
the 394207 harness.
On occasion, a GM stock turn signal lever with cruise
can be used with the 394206.
GM used different colors at times.
Refer to the pinout on page [3] of the operational
function of each wire of the 394206 harness.
RED
BROWN
GREEN
YELLOW

[10] MAN #650553:A
Throttle Pedal Harness [J4]
The throttle pedal harness is also a plug and play style, only for a GM pedal, and only for one style.
The pins must be side by side; not front to back, nor a dual row of pins.
The harness cannot be rewired for different pedals as they may operate on different voltages.