CURT 56407 Custom 4-Pin Trailer Wiring Harness for Select Jeep Wrangler JL Vehicles

Darryl: I had originally planned to wire in my own trailer hitch wiring and bought all the wires, sockets, etc. to do it like the old days. When I went to do it, I realized that some newer model cars won't work that way because of the LED tail lights. I ended up returning everything and bought this instead.

I should have just started with this. It ended up costing about the same and it was pretty straight forward.

It took me about an hour of really taking my time, fussing around in the garage. If I was in a hurry, I'm sure it could have been 20 minutes or so. The instructions for the Jeep Wrangler JL say to run the power line up to the front of the vehicle, but I just tapped into the power outlet (cigarette lighter) on the left side. Just pop off the inside panel and it's easy to get to. There's even a rubber grommet behind it where you can feed the wire through from the tail light.

The double-sided tape supplied to mount the control box was useless. I cleaned the with rubbing alcohol and waited for it to dry before attempting to stick it, but it wouldn't even hold its own weight. I had some 3M grey double-sided tape that worked perfectly.

If you live in...

Canada on Dec 01, 2023

jessie B: Great instructions. I also watched a YouTube video to make sure I was doing it correct. I have no mechanical experience and I installed it fairly quickly along with my new hitch. Would recommend.

United States on Sep 18, 2023

Tim Bailey: Great wiring ease of installation

Canada on Jul 24, 2023

Ben: the 2 sided tape wasnt even sticky, had to get some. when you plan to install and have to go buy tape, its disapointing.

Canada on Jul 09, 2023

Andy Fernandez: Took a little while to install, but it was pretty straightforward.

United States on May 12, 2023

Chris L.: Worked perfectly for my 2019 Wrangler Sport JL 2dr

Canada on Dec 01, 2022

Bobbie Gardner: Too detailed of I stallation for my knowledge, and barely any proper installation instructions in package.

Canada on Nov 19, 2022

Taylor King: adapter harness worked flawlessly. The wire lengths were good and had about 2 feet left over for the battery run. The kit came with everything I needed but I upgraded to shrink fit connectors (that I already had) to ensure a weather tight seal.

United States on Oct 12, 2022

McGinley: My kit came complete with everything needed to wire my Jeep JLU trailer hitch. Trailer hitch not included. Installation took about 3 hours working slow and routing hot wire on the inside. If you prefer leaving hot wire outside under frame, you will probably save a couple hours. Instructions are a good guide if you are already familiar with running a trailer harness. I watched a couple videos prior to install and was able to install without much problem. Removing interior trim pieces is the most time consuming but not hard. I routed hot wire through fire wall on drivers side because there is a removable firewall plug(automatic only). I drilled a hole in the plug( automatics only)and ran wire across to the battery. I used the jeeps own different wiring clips and channels to keep wiring neat. Plenty of wire is supplied. Plenty of zip ties are provided if you prefer. Again, watch videos and get familiar and it will be without problem. I tested with plug in trail hitch tester and all was good. Everything you need is in this kit except tools and hitch. I suggest panel removal tools (5-10 $) if going with the interior install. I think between 10 to 13 mm sockets, Jeep torx kit and a...

United States on Jun 20, 2022

Brad Brown: Nice wiring kit, well made, easy to use plug in connectors for taillights, and everything is included.

The bad news - installing this is a job. I’m pretty handy and it took me 3 hours. If I wouldn’t have had a fish tape to run the wire through the frame rail it would have taken longer. It wasn’t real difficult but it was just the normal pain in the butt stuff like getting the wire over the heat shield to the right side taillight, getting from there to the frame rail, and getting there to the front of the Jeep. Now that I’ve done it, I could do it again in maybe half the time but that goes for most jobs like this.

The curt hitch was about $80, the wiring kit was another $70 or so. Much less expensive than the factory installed hitch and wiring. But if I was ordering the Jeep again...heck I might just add the trailer hitch and be done with it lol.

But back to the review of this wiring kit. It’s fine, and being a pain to install is not the fault of Curt, the company that makes it. So a 4 stars for being a nice kit, lose 1 star for not real good instructions. Had to use the video on etrailer.com.

United States on Jul 16, 2020