Prodigy P2 90885 Brake Controller Wiring Installation in 2010 Chevrolet Colorado  

Question:

Helpful Expert Reply:

The brake light switch on your 2010 Chevrolet Colorado does not have a "cold" wire suitable for use to trigger a brake controller like the Prodigy P2 # 90885. In other trucks where there is a cold wire on a vehicle brake light switch this is the wire that carries a signal only under one condition: when you press the brake pedal. In such a vehicle this is the wire that would connect to a brake controller's RED input signal wire to tell it to generate a brake signal for the trailer.

In your 2010 Colorado you will need to access a brake light signal elsewhere. You can tap into the brake light circuit at the fuse box IF this light is individually fused. In this case you'd use a fuse tap # F2526 installed in the brake light fuse location to get access to a brake light signal for your P2. Another option is to splice into one of the rear tallights' brake light wires and run a jumper wire up the frame, through the firewall and into the passenger compartment.

You may also be able to find the CHMSL wire within a wiring harness. Pull the CHMSL light and note its wire colors. Then check under the door sill plates for a wire loom containing wires from the rear of the vehicle. You'll need to test to find the wire that only carries a brake signal when the pedal is pressed.

A circuit tester like # PTW2993 will make it easier to confirm that you have found a wire that carries a brake light signal. Please refer to the linked video. This is the wire you will connect to the RED input signal wire for the Prodigy. The other three wires, white, black and blue, are ground, 12V+ power and the controller output signal that activates the trailer brakes.

expert reply by: Adam R

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