Can The Tekonsha P3 Be Installed In A 2020 Entegra Coach Reatta XL Motorhome  

Question:

Expert Reply:

Hey Kenneth,

The Tekonsha P3 # 90195 is a universal fit so it would work with your motorhome. There isn't a custom fit wire harness available so you'll need to use the included universal wire harness and splice into your factory wiring. The wire harness is going to have four wires that you'll need to attach in the following manner:

Black - Ran to the battery for 12v power with a 30 amp in-line circuit breaker # PK54230

White - You'll ground to the frame or battery.

Blue - This will run out and connect to the trailer brake output pin on your 7-way.

Red - This will need to be connected to the cold side of the brake light switch. Using a tester # PTW2993 you can poke into each wire coming from the brake pedal to see which one only has power when the brake pedal is depressed. If you can't find it or the wires are too thin gauged you can just install a stop light switch kit # RM-751000 and use it's output for the red wire instead.

You'll need 10 gauge wire # 10-2-1 to run the black power wire to the battery and from the blue wire back to the 7-way. You'll also need some ring terminals # 44-5356A to connect the power wire to the battery and circuit breaker. I would also use a heat shrink butt connector # DW05745-5 to splice the blue wire into the 7-way.

expert reply by: Jameson C

0

Jameson C.

1/5/2026

Hey Kenneth, how did things go wiring the Tekonsha P3 in your Entegra Reatta XL? Were the connections with the universal harness and circuit breaker pretty straightforward? Your update could make it easier for others setting up the same controller.