Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
This item does not fit your vehicle
2012 Jeep Wrangler
These items fit your vehicle
2012 Jeep Wrangler
To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system.
Features:
This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove the floor covering, interior paneling, and tail light assemblies to access this harness. Once you've plugged in the connector, run the red hot lead up to your car battery. Connect the included fuse holder, and then connect the fuse holder to the positive terminal on your battery.
Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.
A tail light converter is built into this T-connector. This converter is a battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.
Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of the trailer. This converter combines the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.
California residents: click here
The wiring harness was time consuming to install but the supplied directions and online video helped a lot. Once installed, it works well.
Very good product. I used the wiring harness on my 2016 Toyota Sienna. Instructions were good. It has worked great for my boat & utility trailer.
I really enjoy dealing with etrailer, I feel like it is a small company next door and that I am a valued customer. Great service, prices and friendly staff. My first go to place for my hitch, rack and trailer needs. I just received a new receiver for my son's van and the Hopkins wiring harness, so now comes the opportunity for the two of us to install it together. Father and son time. Thank you all at etrailer.
I have a small trailer and an old car that I need to toe and I wanted a hitch that would be mostly hidden and this one fit exactly how I wanted it to. It was easy to install. Ordering was easy and delivery was quick. The on line help and advise, spot on. My wiring questions were answered, thank you Jason S, and the install videos helpful as well. (Watched them more than once). You guys ( Jason, George and John) made this easy. Thank you.
The 2 items I ordered arrived in 6 days (to Canada). Both were exactly as ordered. Thanks to installation videos on etrailer, installation was a easy. Great detail in the installation videos. The main reason I purchased this hitch was because only the receiver shows behind the vehicle (cross bar is hidden). I would highly recommend both of these products.
Other than a minor snafu with the delivery, everything was great. It took about 1 1/2 hours to install the hitch. I didn't have to move the vehicle fascia like the directions said, I just had to maneuver it around a bit. We pulled the golf cart trailer with it this weekend and had no problems.
Perfect fit and incredibly easy install. Was so intuitive to install didn't even need the directions. Took about 30 minutes total. Literally plug and play.
Competitive price. On time shipping. Product was exactly as described. Perfect fit.
The Package said a pro can install this in an hour, I am no pro but this only took me about 45 minutes to install from start to finish. Great fit and very sturdy build quality! It said to lower the exhaust to get the part in. I was able to slide it in without lowering the exhaust and complete the install by myself, well I had the assistance of my 3 year old.
10/10 would buy again.
Worked well. Surprisingly this thing took longer to install than the actual hitch.
Easy installation.
fantastic
All items arrived on time and I was able to assemble everything easily
Worked great , a must for a new vehicle.
Excellent service excellent website great communication between the company and me very fast service arrived on time package perfectly!!!! Five star review for me....
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Thomas
10/16/2025
Working excellent . No problems rain or shine . Equipment very reliable