ColleBuilt Products SD-46 User manual
ColleBuilt Systems Inc.
12130 Dearborn Place
Poway, CA 92064
858-748-9414
ColleBuilt SD-46 Electric Steering Backup System
Revised 11/16/2016
WARNING
Read the instruction manual provided with the products and install them following all guidelines.
Follow the maintenance guidelines as instructed in the installation instructions as well as this
notification form. If a back-up system is not properly installed into the modified vehicle and
maintenance guidelines are not met, it could result in serious injury and/or death.
Thank you for purchasing a ColleBuilt Electric Steering Backup System! By installing this system,
you are providing the main power source of the vehicle (the battery) with an auxiliary battery
power source. Once the ignition is turned on; this unit will automatically charge the auxiliary
battery using the factory charging system and will connect the auxiliary battery into the system
in the event of a charging system failure or anytime the unit detects low system voltage. The
system can also be overridden in the event that the main battery voltage is too low to start the
vehicle.
INSTALLATION INSTRUCTIONS
1. Open the hood and disconnect the vehicle battery.
2. Find a suitable place to mount the electronic charging isolator, main backup module,
and the auxiliary battery. Mounting these close to the main battery is preferred because
it will reduce the overall length of the added wiring. If you intend to mount the auxiliary
inside the vehicle or in an area that is more protected than under the hood such as a
battery box, you may want to consider placing the main module and charging isolator
with it for the added protection from the elements
3. Make the necessary connections according to the included wiring schematic starting
with the main battery. All ground connections should be made directly to the vehicles
negative battery post on the main battery. All power connections should be tied directly
to the vehicles positive battery post on the main battery. All wiring should be equivalent
size (gauge) to the factory main battery wire or 4 gauge wire whichever is larger. Also,
the chassis ground wire should be upgraded to match the main power wire size if it isn’t
already matched. The 120A circuit breakers should be wired within 18” of their
respective positive battery posts.
4. The 12v+ True Ignition, ground supply wire for the charging isolator, and the ground
supply wire for the main module should all be 16g. DO NOT connect any extra circuits to
the auxiliary battery.
NOTE: You must use a true ignition 12v+ source for the system to work correctly. A
true ignition signal only provides 12v signal when the key is switched to the ignition or
run position. It should not read 12v when the vehicle is in accessory. If installing into a
conversion vehicle with an existing fuse panel please ensure that the 12v+ ignition
source is functioning as indicated above. If it does not test out as expected find
another suitable 12v+ ignition source.
5. The Override switch also has a built in indicator led that will be illuminated if the system
is active. It should be mounted in a location that is both highly visible to the driver and
easy for them to reach and activate while driving the vehicle. The buzzer should be
mounted in such a way that it is audible to the driver in the event of an emergency. All
wiring for the override switch and the audible and visual alarms should be 16g.
Testing Function
1. After installing all of the necessary components it is time to test the function of the
system.
2. With the key off check that both the main and the auxiliary battery have proper voltage.
3. Start the car and watch the led indicator on the charging isolator. After a short delay the
charging isolator led will turn on indicating that it is allowing alternator current to flow
to the auxiliary battery. Check this by using a voltage meter to verify auxiliary battery
voltage. Turn the engine off and place the key in the ignition position without starting
the vehicle. Wait one minute and ensure that the led on the charging isolator is off. If
this is the case then the charging isolator is working correctly and it is now time to check
the main module function.
4. Turn the key to the off position and check to ensure that the indicator led on the main
module is not illuminated. If it is you may have the override switch in the on position or
a problem with your 12V+ True ignition source.
5. Turn the key to the ignition position but do not start the car. After a short delay the unit
will start to monitor the main stud battery voltage. Because the car is not running it
should detect the lack of alternator output and connect the auxiliary battery into the
system. You can check this by both ensuring that the indicator led on the main module
has turned on and by testing voltage at both batteries and ensuring that it is in fact the
same. The indicator led in the switch should also be illuminated at this time and you
should hear the audible buzzer. The charging isolator led should not be on at this time
because there is no alternator current present in the system. As long as the system
behaves as expected move on to the next step
6. Fully start the vehicle and wait one minute. Check the indicator led’s on both modules at
this time. The charging system isolator led should be on but the main module led should
be off indicating that you are in fact charging the auxiliary battery but the vehicle loads
are not drawing from it.
7. Activate the override switch inside the vehicle. At this time the buzzer and indicator led
on the switch should be on. Check the main module and ensure that the indicator led
has switched on. This means that both batteries are now connected and the vehicle
loads can be drawn from the auxiliary battery. If the system does not behave as
expected please contact us for additional assistance.
WARNING
The 12V+ true ignition source used for any ColleBuilt System MUST be a true
key activated power source. Many vehicles produced today have a delayed
ignition source that allows certain items to remain powered after the vehicle
has been turned off unless the driver’s door is opened. This delayed ignition
source is NOT to be used when wiring any ColleBuilt System and a different
source MUST be used. If the vehicle you are installing the system in is a
conversion vehicle equipped with an aftermarket fuse panel or power
source(s) and you plan on using their provided power source(s) please TEST
the ignition source and confirm it does not act on a delay. Some vehicles such
as the Dodge Grand Caravan allow this feature to be turned off through the
driver information center. This is NOT an acceptable solution to remedy the
delay as the customer has the potential ability to turn this feature back on.
Power Control Module Operation:
•With the ignition off, Power Control Module is locked, regardless of the main battery's voltage
or the override switch state. This will keep the two batteries isolated from each other.
•When the ignition is turned on, a 30 second window is opened in which
The override switch will work if pressed, connecting the Auxiliary battery to the main battery
regardless of the main battery voltage.
Main battery voltage sensing is disabled (which means that the Power Control Module will not
connect the two batteries within this window during cranking, when the main battery voltage is
guaranteed to drop below the lowest under-voltage threshold).
After the 30 second window has closed, assuming the ignition is still on, the override switch
and voltage sensing will both be enabled.
•If the Main Battery Voltage drops below 12.3V but not below 12.0V The Power Control Module
will automatically activate connecting the two batteries after a 30 second delay.
If the Main Battery Voltage drops below 12.0V the Power Control Module will automatically
activate connecting the two batteries with no delay.
The Power Control Module deactivates disconnecting the two batteries (assuming the override
switch is not active) when the main battery voltage rises and stays above 13.2 V for 10
seconds.
WIRING SCHEMATICS ON FOLLOWING PAGE
Blue
Orange
Brown
Red
+
+
Aux. Batt.
-
Main Batt.
-
Switch wiring
NOTE: Not all wires are used in this
application. Please cap off remaining
wires individually to avoid short
circuit.
Main Module
12v+ True Ignition
+ Buzzer -
Red
Blue
Orange
Brown
15A Circuit
Breaker
Switch Wiring
ColleBuilt Push
Button Switch
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