Where to Find Info on Programming P3 Brake Controller

Updated 07/29/2025 | Published 07/27/2025

Question:

Tekonsha Prodigy P3 Trailer Brake Controller i would like too have some information to program the brake controller. Ibought it from you.

asked by: Edward C

Expert Reply:

Hey Edward, I attached a link to the manual for the P3 part # 90195 for you to check out that details exactly how to program all aspects of it but if you have a specific issue you need help with or more clarification on a specific thing just let me know and I'll walk you through it!

expert reply by: Jameson C

Edward C.

7/28/2025

When you press the brake all it shows is 0.0 but the arm underneath, when you apply it. It shows voltage going to the brakes, and they work. Thanks Edward

Jameson C.

7/28/2025

@EdwardC So this is a proportional brake controller and it needs to sense movement to apply brakes with the pedal. Have you tried pressing the pedal while the trailer is moving and see if the voltage changes at that point?

Edward

7/29/2025

@JamesonC no there is nothing except 0.0 unless you move the lever. Thanks Edward

Jameson C.

7/29/2025

@Edward Can you make sure the red wire of the brake controller is connected to a circuit that only sees voltage when the brakes are applied? You can use a tester like the part # PTW2993. This is most likely where the issue lies.