Product Specs:
Trailer Wiring
Trailer Connectors
Trailer End Connector
4 Flat
Plug and Lead
31 Feet and Longer
Optronics
4-Way trailer harness connects to your tow vehicle to control trailer light functions. Wishbone-style harness comes with 2 tail light wires split for simple wiring.
Video of 35 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 42" Ground
Average Customer Rating: 4.8 out of 5 stars (765 Customer Reviews)
4-Way trailer harness connects to your tow vehicle to control trailer light functions. Wishbone-style harness comes with 2 tail light wires split for simple wiring.Works very well after re-wiring trailer lights with waterproof distribution box.
2 things. 1st@: I think there should be an option to pick tinned wire. 2nd: The ring terminal for the ground needs to be bigger.
Made it easy to rewire old 16 foot trailers with extra wire to reroute it better.
I want to thank you for all your help with my trailer you were more helpful than you realize. So this is my trailer for a 22' Flats Cat shallow draft Catamaran. I totally dismantled my trailer and buffed by hand with a wire buffer and sand blasted in some spots and applied multiple coats of some very expensive galvanize paint (Z.R.C.). I installed all new C. E. Smith Carpet (about 80'), seven new LED waterproof lights, new springs, new equalizers, new tongue jack, new wench, new safety chain, new chain brackets, all new SS hardware and a 35' long wiring harness.
I was able to send only one review with a picture of the safety chain and brackets. I'm having a little trouble with the rest..oh some of these items were bought locally or from your competitors, until I found ETRAILER. Your prices were cheaper for the exact same things. Your helpful how to videos were helpful. And Rose, your personal helpful knowledge made my buying experience very pleasant, I actually enjoyed talking to you! Thanks to ETRAILER and specifically to Rose G.
Item as describe. Work Fantastic!!!!!!! !!!!!!!
It all worked as advertised good instru ctions.
Worked out great. Direct replacement for my old 4-way boat trailer harness that had corrosion damage at a quick splice joint causing my trailer marker lights to not work. Easy to follow wiring diagram from etrailer store page.
The plug looks and feels solid! This is the only place that had a long enough wiring harness to do what I needed. Shipping was also very fast!
Great product
Albert
3/1/2024
Still working great with no issues
Perfect! Just what I needed!!
I could only find a harness plug with one brown wire (4 wires total) at my local stores. I "googled" the problem I had (my harness plug had 2 brown wires). A rep from etrailer had answered someone's same question on a message board. It was a detailed explanation as to why one would need this part. Then the rep put a link to the etrailer site. And there is was, the harness plug with 2 brown wires (5 wires total) and at an agreeable price to boot!!!!! And now I know about the etrailer website!!!!
items are exactly as shown on website. I made a phone call to clarify if my application suited the part. Friendly knowledgeable Shipping price & delivery excellent
Great product very easy to install my order arrived 3 days early I received emails so I was informed when my wiring harness was shipped and one when it was delivered Thanks E Trailer A happy customer!!!
1 year, and so far so good. I have had cheap harnesses before that would oxidise from the inside out and break when connecting flat 4, but this one is doing fine.
Reasonably priced and delivered before promised. It's exactly what I need.
A quality wiring harness, plenty long enough for my boat trailer.
Good wishbone wiring harness, decent ground eyelet, not tiny
This worked great, had to rewire my trailer after having it painted and reconfigured and this item was long enough and allowed me to tie in my additional lights.
Replaced the wiring and lights on my 1992 boat trailer. I was able to get everything needed from etrailer. I think Optronics is of the highest quality
and recommend both etrailer and Optronics product.
Absolutely Fabulous! Exactly what I was looking for but couldn't find at any retail store in my area! The wishbone design splits the brown wire at the plug. Makes wiring both sides of the trailer with no splices or having to find additional brown wire sold by the foot!
The white wire needed to be a bit longer, but I made it work, other than that a
Great Product!
Product as described. Fast shipping
The wiring harness arrived quickly and was installed with ease.
Came on time long enough for 23' boat
I am giving this item an Excellent review based on my former (very positive) experience with your products, but actually I haven't used it yet. My former harness is still working. I will use this as a replacement when the time comes.
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VS
Product Specs:
Custom Fit Vehicle Wiring
Trailer Hitch Wiring
No Converter
6 Feet Long
Universal Fit
4 Flat
Tekonsha
This universal, splice-in wiring kit includes a 4-way flat connector, circuit tester, 72" of bonded wire, and 4 wire tap connectors. Color-coded, bonded wires have functions printed on them to make installation easier.
Video of 4-Way Flat Trailer Connector w/ 72" Harness, Circuit Tester and Wire Taps
Average Customer Rating: 4.6 out of 5 stars (209 Customer Reviews)
This universal, splice-in wiring kit includes a 4-way flat connector, circuit tester, 72" of bonded wire, and 4 wire tap connectors. Color-coded, bonded wires have functions printed on them to make installation easier.Thanks to the video I did not have a problem installing the trailer wiring on my 2014 Smart Fortwo.
Thanks
Vincent S.
5/31/2020
Just fine.
Awesome product never any issues use along easy install practically don’t need instructions
Worked great for 6 mo. Ish. I’ve had the right side wire become loose/break so occasionally the right side will randomly choose to quit working but (at least for me) that’s not a huge deal with how little I use my trailer. solid purchase overall.
Katrina B.
11/18/2022
I have contacted the manufacturer and the have suggested that the wiring harness should be checked for a good connection, it sounds like the harness may not be connected correctly.
This harness worked great for my Corvet te.
First thing I noticed were the online videos that can be saved to a file. nice! also noticed the instructions for assembly of the tow bar was small and difficult to read, (my mechanic was crying throughout the installation) There were no instructions on the wiring kit installation, even a photo of the wire to wire color placement would have helped, but my mechanic went on line and got the photo from an outside source - thus the 4 stars, not five. - other than that it worked out very well, the products are solid, well made, and superbly engineered. everything was inside! thanks !
Mike L.
3/15/2019
We have a link to the installation instructions as well as some install videos on the product description page.
Took me almost a year to actually get to installing this on the van, but wanting to use the trailer was a strong motivator. Its just a basic wiring set with quick connect clips in a bag. The fact that I was installing this on an extended camper version of the van this was designed for complicated the install, but "fortunately" there were enough rust holes that I could drill where I need to drill. Wires were long enough for the job (exactly the length needed) and the clips came pre-filled with silicone grease. Nice. Came with no instructions, but the on-line installation video is *excellent* and guided me thru the entire process. Overall, it was a convenient way to buy and install a wiring harness on my older van. Only two minor complaints:
* Did NOT include a weather-proof cap for the plug, which hangs outside by the hitch. I took the one included with the wiring kit for my Suburu (from etrailer) since that plug is stored inside the vehicle.
* The 12v circuit tester did NOT work. Fortunately I had my own tester.
I got a 4-wire harness to connect my jeep to a utility trailer. The harness worked perfectly.
The connectors were good--surprisingly, they were stuffed with noncorroding gel so that the jeep's wires are protected. There were no specific instructions for the hookup, but simply removing the taillight lenses showed which color wires to splice.
The supplied tester failed to function, but that wasn't a problem at all--I didn't really wish to poke additional holes into the wires anyway.
Took a half hour to complete.
This was a pain in the rear end. Wires were not labeled and the tester was useless. Had to go to online for some instructions (none included with kit). Took a long time to get it wired to the car.
Mike L.
12/17/2018
On the product page, we have a link to the instructions as well as a couple of install videos.
The installation documentation, along with the video aid, was very helpful and easy to understand. It helped a lot, and made the installation fast and easy. I like it a lot, and I appreciate the support I got on a minor issue which was easily and quickly taken care of.
Russell
4/4/2018
The products I purchased work beautifully! I haven’t experienced a single issue with anything.You guys are terrific!
Each trailer is the best. Very easy to order from. Also, Sherry was very helpful and friendly.
Product as described and very easy to install. In my case it didn't work, because the original wiring on my truck apparently is bad and I couldn't figure out what was faulty, so I ended up getting another harness that plugs into existing tail light harness, which worked great.
Over all good experience
Missed the bolt package in my delivery but it was sent out right away... Friendly customer service... Hitch went on without a hitch. Great product..I will use this company again.. Thank you
Only thing that needed to be changed was wire connectors. Type included with the plug are easy to install (no insulation stripping, just clamp) but are not reliable. Throw those away and use standard crimp butt splices. Plenty of wire included, so I cut to more convenient length, spliced, and taped 8 inches on both side of splice. Tester is a nice touch, save in your tool box after installation.
I installed this wiring kit along with a hitch. This was pretty easy to install, and the directions were easy to follow. The hardest part was pulling up the the liner in the hatch back area to get to the wires.
I needed a hitch and wiring harness to pull a small trailer for hauling lumber. The harness was easy to install and has worked without any problems over the past year.
Their customer service is amazing and within a few day my order was here.
The box of contents I received was partially damaged and the boxes inside not properly secured and wrapped and damaged inside.There was a hole in the box and am missing one elecrical connector. Everything else was O.K.
Jenny N.
11/16/2021
I will have our customer service team reach out to you.
Has held up great over a year so far. I recommend wrapping the wiring in electrical conduet to help make the set up last even longer like I have
Kyle
3/23/2018
Perfect!
Your product was easy to install and works fine. However, one thing that I think would be a good idea, would be to include a set of installation instructions with the product. I didn't know that the metal tabs on the connectors had to be pushed all the way down before snapping the plastic hinge over the top of the tab. A friend of mine informed me of that.
I purchased the Draw-Tite Receiver and wiring kit. All parts were easily identified. Good printed instructions. Everything assembled easily and fit perfectly. It took about 1.5 hrs to complete. It will be used to tow a small utility trailer. Highly recommend this equipment and etrailer.com. Thanks.
Ordered a few weld on trailer hitch receiver tubes among other trailer parts. Parts were delivered in a timely manner and the quality of the receiver tubes is excellent. I will buy from this group in the future when I need trailer parts.
4-pole Hardwire Kit with circuit tester.
I needed the kit to attach rear (break/lights/back-up/tail lights) assembly.
Worked perfect. I used it to extend the pigtail on my tow dolly. etrailer has great shipping & service. Have bought from them many times.
Everything was sent according to order and mailed extremely quickly. Product was easy to use on a Hummer H-3 for a trailer hitch.
This is the 3rd excellent review I have written about eTrailer. com this month. Bottom line the product came as and performed exactly as I expected. Very good quality at a fair price. Their products, pricing and overall service are exceptional. You can't go wrong dealing with this homegrown American company. I am confident this will not be my last positive review.
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Eric
1/29/2019
After one year, It is still working great! It makes all the difference having long enough wires to where there is no splicing on a saltwater boat trailer.