Wiring Diagram for Installing 3-Wire Style Diode Tow Bar Wiring Kit

Updated 04/16/2020 | Published 07/31/2019

Products Featured in This Question

Roadmaster 6-Diode Universal Wiring Kit for Towed Vehicles with Separate Lighting

(62)

$198.55

Question:

Why are the diagrams the same on you instructions for 2 to 3 wire and 3 to 3 wire illustrations? I need a 3 wire from motor home to 2 wire flat tow.

asked by: Bob W

Expert Reply:

I attached a diagram for the 3 wire install of the Roadmaster kit part # 154-792-118158 which can be used as a guide for installing the part # TR118821 as well.

expert reply by: Jameson C

click to enlarge

Bill B.

4/13/2020

Just purchased a Jeep Wrangler unlimited that does not a tow package so I need a rear hitch and wiring system I also tow the vehicle behind an rv and while doing that I tow a boat behind the Jeep so do I need a separate lighting system for towing and one so I can tow it

Chris R.

4/15/2020

You'll need a separate wiring harness for towing the trailer and towing the Jeep - since one is designed to send power back to the boat trailer lights and the other is used to essentially treat your Jeep like the trailer (receive signal inputs from the RV to illuminate the Jeep's lights). We definitely have the components needed to make this happen (along with the hitch), but I would need to know the model year of your Wrangler before I can make any specific recommendations.

Bill B.

4/15/2020

It is a 2020 wrangler unlimited

Chris R.

4/16/2020

Thanks for the info! For flat tow wiring I recommend using the Roadmaster Diode Kit # RM-15267, which will give you a 6-Way connector at the front bumper and enough coiled wiring to go from there to the 7-Way on the RV. Then for trailer wiring you can use the Tekonsha # 118786, which will plug right in-line with the rear tail lights to provide you with a 4-Way for connecting to the trailer. Finally, for a trailer hitch the etrailer # e98856 will work perfectly.