Installation By Wire Color & Function On Tekonsha Prodigy P3 Brake Controller In 2014 Chevy Tahoe  

Expert Reply:

On your 2014 Chevy Tahoe, there is no plug present under the dash, but the wires are already run. You will connect your Tekonsha Prodigy P3 Brake Controller # 90195 to these wires which are bundled under your steering column to the left of your brake pedal. These wires are normally bundled with white tape. I recommend using butt connectors like # 05731-5.

There are 4 wires in your truck (a white wire, a blue with white tracer, a red with black tracer, and a dark blue wire) and four wires from your brake controller ( blue, white, black, and red). Make the following connections:

Dark blue to Blue (Brake Controller Output)
Red with black tracer to Black (Power to Controller)
Blue with white tracer to Red (Brake Light Signal)
White to White (Ground)

I've attached a couple articles to help as well as a video.