Troubleshooting a Tekonsha Prodigy P3 Brake Controller Not Seeing a Trailer on a 2004 Ford Excursion

Updated 12/27/2021 | Published 12/26/2021

Products Featured in This Question

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Ford, Lincoln, Mercury

(1793)

$18.95

Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional

(6643)

$155.79

Question:

I bought the P3 with the adapter cable for a tow pkg 2004 ford excursion. The controller has not seen any trailer that i have connected to the factory 7 way. I have changed the factory 7 way trailer connector on the excursion and there is still no trailer being picked up by the P3. The cable has a tag on it that says 3035 and 9/26/20.

asked by: Daniel

Expert Reply:

For your 2004 Ford Excursion the Tekonsha Plug-In Wiring Adapter # 3035-P is the correct wiring harness adapter to use with the Tekonsha Prodigy P3 # 90195 for a plug-n-play installation. If you have your trailer connected and it isn't reading it's possible you need to check some fuses or relays in your Excursion. Also, check the pins on the # 3035-P to make sure none are bent and the connections are being made. Another thing to check is that the 7-way trailer connector on both the Excursion and trailer are clean.

I've attached an article on troubleshooting brake controllers that you might find helpful. If you are still experiencing issues after this please reach back out and I can help you troubleshoot further.

expert reply by: Scott S