Recommended 4 Pole Wiring Harness for a 2010 Jeep Wrangler

Updated 10/14/2024 | Published 06/24/2024

Question:

2010 jeep wrangler, installed Hopkins wire harness for flat towing. Works great. Now have added hitch for towing. How do I get lights working for that? There is a Hopkins kit for that. Do they make any kind of adapter to use both? Or do I need to splice a four wire plug in somewhere?

asked by: Max F

Expert Reply:

Max, to install a standard trailer towing harness on your 2010 Jeep Wrangler you're just going to need the Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # HM42635. This harness installs into your Jeep's factory wiring and will provide a 4-pole at the rear.

Also, according to Hopkins, you can use both the # HM42635 trailer wiring harness and their # HM56200 flat towing wiring harness at the same time.

expert reply by: Bryce D

Steve C.

10/13/2024

I’ve installed both the 56200 and 42635 harnesses on my 2011 Jeep Wrangler. When not connected to my motorhome, everything works great. Trouble is when I connect my motorhome, all lights work except right blinker from 4 pole connector. What could wrong or what do I need?

Bryce D.

10/14/2024

@SteveC Steve, it could be the wire itself that carries the signal that's the issue, or maybe the harness is not making a good connection. I'd suggest also checking that there is enough power flowing on that circuit.