How to Wire Up a Motorhome 7-Way with a Separate Circuit to a 7-Way with Combined Circuit

Updated 03/25/2015 | Published 03/24/2015

Products Featured in This Question

Roadmaster Brite-Lite 3-to-2 Tail Light Converter for Towed Vehicles

(129)

$54.92

Hook Probe Circuit Tester

(66)

$14.40

Question:

I m converting my motorhome to a 7 way socket. It has a 3 wire system for the brake lights. 2 lights on each side instead of one on the motorhome Presently, I have tail lights, and directionals, but no brake lights on the car dolly Is this what I need to get things rolling correctly? RM-732 Do you have a wiring diagram I could look at? Thanks,eh?

asked by: Brad

Expert Reply:

The # RM-732 is the correct adapter to use to go from a separate taillight system like what you have on your motorhome to a combined system like what is on your tow dolly.

For wiring your motorhome with a 7-way you would basically want to follow the wiring directions that are on top of the converter. The right side of the converter is the input side so you will need to test the wiring of your RV with a circuit tester like part # PTW2993 to determine function and wire it accordingly. You'll notice that all of the taillight circuits will pass through the converter except for the running lights which will run straight to the 7-way. I attached a diagram that details how a 7-way typically get wired up as well.

If you need a 7-way you would want part # HM47210.

expert reply by: Jameson C