To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
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Plug-and-play custom harness gets turn and brake signals on your towed car with no hardwiring or splicing, and no effect on your warranty. The built-in diodes protect your car from electrical feedback.
Features:
Specs:
Notes:
A combined lighting system, or 2-wire system, uses the same light bulb to signal both braking and turning. (In other words, the car signals a turn by flashing the brake light.)
A separate lighting system, or 3-wire system, has the brake signal and the turn signal light up independently of each other. Typically, the turn signal is amber.
To keep the separate lighting system on your car functioning properly while you're flat towing, add a wiring converter (118158 - sold separately) and 2 additional diodes.
If the engine is off and your car's brake lights illuminate when you press the brake pedal, you need to install a brake light relay (RM-88400 - sold separately) with this kit. Without a relay, your car's brake signal will override the turn signal sent by the RV when you are slowing down to make a turn, creating a potentially dangerous situation. Other drivers will see that you're slowing down, but not that you're making a turn. With a brake light relay, you can signal both and travel safely.
California residents: click here
The wiring kit is SHORT!!
It lacks 3’ in making it to the baseplate.
I was concerned when I received it and noticed the box indicated it was for a Jeep JL which is a bit shorter than a gladiator.
The fix is to splice the harness, what a horrible situation!
Simple and easy purchase process. The installation of the Curt custom tail light wiring kit was almost as simple and easy as the purchase. etrailer is great!
Super easy installation. This is the third vehicle I have wired for towing and this was by far the simplest.
Kyle 
6/21/2025
This wiring harness is still going strong! I haven’t had any issues with my lights not working while towing or the vehicle lights when not towing.
This kit does a good job. Wish it had a protective sheathing wrapped around it for added protection. Was just long enough to reach the front of our jeep gladiator.
Very good product and was easy to install. It was a 1 to 1.5 hour project without the use of a vehicle lift.
Came sooner than expected. Everything seems to be there. Will have it installed in a couple wedks
James
7/10/2025
It is still working great. No problems
fit & function was perfect.easy instructions to follow
Product was excellent as advertised however installation instructions could be better with clearer pictures. Routing of wiring at rear of vehicle has many options however one route gives the safest and easiest to install.
Watch the videos to help with installat ion
Our family owns a small family business in Pennsylvania. When I purchase products from etrailer I'm always impressed with your service and follow up. You all are doing an excellent job!
Dave Rotelle
September Farm Cheese.
Everything fits perfectly and works great. Easy installation
Wiring harness worked great easy to hook up. I ran the entire harness in plastic wire shield snd then pulled it through inside frame from back to front on drivers side of jeep to ensure it wouldn’t get ripped off.
Although the package was missing a portion etrailer immediately agreed to expedite the part to me. Great customer service, as is the norm for them. Would be 5 stars if all parts came in same shipment. Great company!
Very easy to install and very well made. I'll recommend it to others
Looks like it will do the job.
I liked the quick connect tail light plugs. I was very disappointed that the wire harness going from the back of my gladiator was too short. I took careful measures to make certain not to route the wire poorly so I wouldn’t have any length issues. Unfortunately that didn’t work out. I ended up having to splice the 4 way to reach the middle of my front bumper so I could complete the job. That harness needs to be 4 feet longer for gladiators. Buyers this is a nice harness but beware it poses problems with length. There is no way to properly route this harness without adding to it’s overall length.
Perfect fit, easy to follow instruction s.
So far so good.
This product arrived, undamaged, and in perfect condition. It’ll be installed on my 2024 Jeep Wrangler in order to safely flat tow it with my RV. Thank you eTrailer! Very much appreciate your wonderful customer service!!
Owned it over a year and has worked flawlessly. Installed it myself following E-Trailer's excellent installation videos.
The product was exactly as advertised. It was processed in a timely manner. However due delays in shipping by usps. It took 13 days to arrive. The initial estimate was 5 to 7 days . I was forced to miss a trip due to the delay. When I contacted etrailer and asked for another item to be shipped by a ups I was informed I would have to wait at least 14 business days. I am a frequent customer but this experience has me rethinking using etrailer in the future due the customer service unwilling to flex a little
Great system. Much easier connectors than other systems I looked at. Videos gave me confidence to do it myself. Works like a charm.
Easy to install. Has held up great for a year.
Very easy installation. Great service. Got it in two days.
This kit worked perfectly on my 2024 Wrangler. Easy to plug it all in. The only challenge is running all the wires through the chassis and back to front but that just takes patience and a mechanics rolling creeper.
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Robbie
5/28/2025
The Curt custom tail light wiring kit is still working great!