Can You Jump Off A Diode Wiring Kit To Install A 4-Pole Trailer Connector

Updated 06/07/2022 | Published 06/04/2022

Question:

Currently have a 2019 Jeep Cherokee Trailhawk. No tow package installed. The Jeep is currently set up and used as toad/dingy with my MH. All works fine. I would like to add a 4pole plug to be able to plug in a add-on light bar for my bike rack. Since it is already wired for being towed, and has the proper diodes installed, I dont think plugandplay unit would work. Is there any reason I cant just install the 4 pole plug on the load side of the diodes? This way the power will come from either the jeep or the MH when towing?

asked by: Robert A

Expert Reply:

No, you can not just jump off of the diode wiring kit to install a 4-pole flat on the back of your 2019 Jeep Cherokee. You'll need the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56406 which has a module that reads the signals passing through your Jeep's factory wiring and sends them through to the trailer via the 4-pole flat connector.

This module is fused to prevent any damage to you vehicle's wiring in the event of a short. Just jumping from the wiring after your diodes will leave all of your wiring unprotected and can cause an electrical fire in the event of a short.

Even if you used a plug and play diode kit you'd still be able to use the # C56406 and connect it in-line with the diode wiring. I've attached a video below where Dave will walk you through the installation of this wiring harness.

expert reply by: Kevin C