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Quickly and easily install a 7-way, RV-style trailer connector on your vehicle with this custom harness. Connector plugs directly into OEM tow package port - no cutting, splicing or tapping required.
Features:
Specs:
Installation
This custom-fit T-connector plugs into your factory tow package wiring harness, which is located beneath the rear of your vehicle, along the driver's-side frame rail.
Once installation is complete, the 7-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 plug on your automobile and the 7-pole connector itself - to help prevent corrosion.
California residents: click here
I want to thank Daylon and your team for the excellent work getting me the correct trailer harness and controller. Keep up the great work. Tony
Etrailer.com did a great job for me. I was trying to find a replacement for the 7-way bumper trailer outlet for my 2002 Ford F250. The first outlet would have fit, but there was damage in the last foot of the factory wiring harness I had to connect to. After several emails with Julie H. in customer service, Etrailer did the research necessary to find an alternate outlet that had the correct factory harness plug and provided new wiring back the the rail of the truck bed. Now Ive mounted this one on the tailgate post instead of the bumper which will protect it from the damage that ruined the original. Thank you again Julie!
These harnesses are great have had a hard time finding ones with factory ends on them. These guys had just what i was looking for piece of cake to install just route wires mount and plug in very clean install
It was not an exact fit, so I had to modify it somewhat. But it did the job I intended it for.
Excellent!!
worked great
There were not many options available for what I was lookin king for. Older vehicle and looking for a plug and play plug. Included was a harness (which will plug into the newer style plug) and the relays + fuses (which I did not need). There was not a mount and the plugs base had a different layout of holes than my existing mount. This product should work and is what was described but not exactly what I needed.
Eric
8/28/2019
Working well
Easy to install truck wiring harness. Plug and play and done. Strong springs on the harness plug door that hold the trailer plug in very well too.
Shawn
9/11/2021
Great. Its still functioning perfectly.
Shawn
9/11/2021
Great. Its still functioning perfectly.
I purchased the Curt Triflex C51440 controller, C51322 adapter, and C55243 wiring harness together to correct the hacked up wiring that was on my 2000 F250SD after having intermittent brake issues on my 18' trailer. Due to the slipshod nature of the wiring that was on the truck, I felt it wise to start fresh. After cutting out all of the spliced in mess, installing the Triflex unit was extremely simple and made for a clean install. The C55243 harness was a simple plug and play. Keep in mind the harness does not include a bracket to mount the 7 way plug to the bumper (I already had one, you may not). The most difficult part of the install (after removing the old stuff) was finding the auxiliary distribution block to install the relays in. This varies by year, make, model and a little searching on the Google resulted in a few helpful photos/diagrams. The products seem to be good quality, shipping was prompt, and I received a follow up email from etrailer to confirm that my product had arrived and my needs had been met. Very impressed to this point. I have not towed with the setup yet, but the brake controller indicator display indicates everything is functioning correctly.
Removed old plug unit from back bumper, replacement unit fit to exact existing screw holes. Harness was just an unplug and plug in for the new unit.
Took me less than 30 min to replace the old 7-pin plug. I regret not getting the 4-pin plug in option that was available,, factory wired in with the Harness
I ordered a new wire harness and electric brake controller from trailer and was extremely pleased with the product and the level of service I received. I ordered it on a Sunday regular mail and hot an email 2 days later letting me know they upgraded mail delivery from 5 to 7 days to 5 day delivery no charge. I have 2 horse trailer's and have lots of friends who have the same and have recommend this site. I am also impressed with the wire diagram's and videos.keep it up guys your doing awesome.
Replaced a wore out and cut and spliced older connection with this new plug and play one. As usual etrailer hooked me up with exactly what I needed. From the pictures you can see the old one with a wiring nest and the new one looking good and doing good. The new one plugged right in and with the exception of having to use a couple of the old mounting bolts it looks perfect. I’m really happy with this purchase as I have been with my other etrailer purchases.
Works as described. Amazingly simple installation. Still completely satisfied.
Wow! What can i say about the outstanding customer service and outstanding followup by this company. I would highly recommend this company to anyone who needs trailer parts or trailer associates. Roger R was warm, friendly and very engaged in handling my request and the delivery was right on time!!! He followed up with a call to tell me the shipment had arrive in Dallas the day before it was to land. Thank you Roger!!!
Sincerely
Michael
Argyle Texas
Easy installation and factory connection is the way to go. Now all my trailers have the same connector whether goose neck or bumper pull.
Great product. Would have liked some extra slack aside from what came with. I cut and put junction box under box on frame. Feeding gooseneck, headache rack, and bumper 7/4 way. Works as described.
worked as it should
I was a bit disappointed that in your description it says 7pin with 4pin, so I was expecting the 7pin fixed base with a 4pin flexible connector with it. I would have returned it if the shipping would have been cheaper.
I do a lot of product reviews. If at any time in the future you want a product review, just let me know, and you can send me a product to try and write a review. It is sort of a hobby of mind. I love doing reviews, and trying new products. Just in case you are interested, my address is:
Jerry W Mann
Product review
12900 Raleigh Road
Benson, NC 27504-6812
(919) 749-5290
The Wiring Harness that you sent to me is of great quality. Actually better than OEM. The wires are of a heavier gauge, and the plug fits like a charm. Everything works as it should with no issues what so ever. Thanks for having a great product.
just like in the picture, even though it was not listed for my 2003 f250 had to take a chance, the ones listed for my truck had a round pig tail connector that would not have worked, took a while to get it due to not having my complete order,very good product, the fuses and relays didn't need my truck was already set up,
Received my new brake 7-way plug and harness in 2-days. Kit came with (2) 30 amp fuses and (2) relays which I did not expect. Very pleased with etrailer. I needed and anode for my 5TH wheel and did not realize they stock this item as well. I will use etrailer again in the future!!!
Thank all of you from customer service to delivery. Quality products, quality service, and the prices were great. Ford wanted twice the price for the T-connector and over $60 for a $4 bracket. I'll be sure to order from your site in the future. Thanks!
Very good description, very helpful, very simple plug and play, fast shipping and packaged very well everything needed was included only recommendation I have would be to have fuses and relays locations in case someone didn’t have access to the owners manual other than that no complaints does state in instruction sheet to see owners manual for fuses and relays locations
Excellent service...lightning shipping.
Produce as described just what I needed.
I'll be back for all my wiring needs
product is great works just as described just wished wires in the back of the plugs was watertight
Info for this part was:
At etrailer 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.
Brooke M.
6/27/2025
Daylon is a hard worker! I'll make sure he sees your review. It's gonna make his day that much better! Glad you're all set with the controller and harness :) What are you towing?