When using a wiring harness supplied by your vehicle’s Manufacturer (OE Harness), DO NOT MATCH COLORS. Please follow wiring chart below
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Chevy Wiring
|
Brake Controller Wiring
|
Function
|
| Red | Black | +12 Volts |
| Light Blue | Red | Stop Light |
| Black | White | Ground |
| Dark Blue | Blue | Trailer Brakes |
| Brown | NA |
Remember, the above colors are just a GUIDE. your colors may be different, read the instructions!
Get a test light and test all the pins on this plug, looking for the one that lights up when you press the brake pedal. The brake light switch is very hard to reach, so poking the wire might be easier, but with a probe tester, look for a wire under the dash that lights with the brake lights. You are probably looking for a small gauge white wire (seems most GM trucks of this era used white). Tap into the wire for the brake light feed (red wire on Tekonsha brand controllers)
For power, we ran a wire through the firewall, and tapped onto the fuse panel under the hood, through a 20 amp Fuse or Circuit Breaker.
We grounded the controller under the dash to a ground screw. Easy.
The blue (brake wire to plug) was simply passed through a hole in the firewall and ran along the frame to the back plug on the truck. (making sure to use lots of tie wraps to keep the wire away from hot and moving parts)
UNDER THE HOOD:
We used one of the main power feed studs on the panel, and with a ring connector, got power to the Circuit breaker, to feed to controller. A 20 amp fuse would also work fine
