








🚛 Wire smarter, not harder — stay road-ready with Oyviny’s ultimate trailer harness!
The Oyviny 4 Pin 5 Wire Trailer Wiring Harness features a 22-foot wishbone Y-harness design with pure copper wires protected by a durable nylon net tube. Its color-coded, thick PVC-coated wires enable easy, corrosion-resistant installation for rewiring both left and right taillights simultaneously. Compatible with standard 4-way flat trailer connectors, this harness offers a reliable, long-lasting solution for trailer lighting needs.













































| ASIN | B0CNXDLQT2 |
| Best Sellers Rank | #7,950 in Automotive ( See Top 100 in Automotive ) #3 in Trailer Wiring #64 in Automotive Replacement Fuel System Equipment |
| Brand | Oyviny |
| Connector Type | 4 Pin |
| Customer Reviews | 4.7 4.7 out of 5 stars (853) |
| Date First Available | November 24, 2023 |
| Item Weight | 15.1 ounces |
| Item model number | OV-YH-1457 |
| Manufacturer | Oyviny |
| Manufacturer Part Number | OV-YH-1457 |
| Material | Copper, Nylon |
| Package Dimensions | 7.68 x 6.5 x 2.32 inches |
| Wire Diameter | 0.03 Inches |
J**R
Nice product
I like this harness. The wires are color coded the same as most other's so, makes it easy to install. The wires are placed in protective loom which separates and goes down each rail of the trailer. Plenty long enough to adapt to various length trailers.
E**T
Good and easy!
Excellent product easy to install.
C**S
TRAILER WIRE HARNESS
Very simple. I've wired in old school days. It's work, but. It keeps it simple. Works VERY well.
J**H
Excellent Trailer Wire Harness
Recently purchased a 5x8 ATV trailer that needed to be rewired. This harness seemed like a good value so I purchased it. I was not disappointed with this purchase. The harness is well made and the length of the harness was more than I needed. Hooked the harness to new LED tail lights, plugged it into my truck, and it worked like a champ.
M**A
Did the trick
Damn mice got my trailer wires yet again. Decided to just replace all of the wiring and purchased this kit. It worked great but my only complaint is the length of the white wire - the ground. It is way too short. This seems to be the same with all makes/manufacturers of these trailer harnesses. The tongue of the trailer is the most critical part and i have no interest in drilling holes in it which could then lead to rust. If installed there, it would also be readily available to get nicked I or tore off it it were screwed into the tongue area. So, I had to extend the white wire in order to ground on the frame further back, which also allowed me to run the white wire inside the tongue’s square tubing and keep things tidy and safe from any accidents. Other than that, it is a great little harness
P**2
Well made product
This is really well made. I liked that I could home run each side.
M**K
Easy to use.
Made wiring a boat trailer easy.
D**N
Super EZ installation.
Why did you pick this product vs others?: This is the simplest harness I've ever installed. The wire quality is excellent. It fits perfect. Think I had it completed in 20minutes by myself. The value for your money is so worth it. Looks great.
S**N
Works great, good quality, easy to install
V**R
super qualité
T**R
Good quality and easy to install. Protective mesh tubing is great to keep everything neat and tidy. Installation took no time. Would recommend and buy again.
B**H
Great quality and easy to install!
R**H
Bought this to rewire a boat trailer and overall pleased with it. The main positive is that it is a split harness with 5 wires separated to go along each side of the trailer. This makes it easier to run through the frame without the need for any crossover wiring that is more typical of standard four strand harness. It also arrives with protective harness sheath on each pair of wires which is a nice addition to reduce potential wear on the wire insulation. While the harness sheathing is a nice feature it also adds to the main flaw of this design. This harness is set up to run to a pair of tail lights but most larger trailers also have side markers and this harness does not have wiring dedicated to that purpose. The sheath makes it more difficult to tap into the wires along the run as you have to cut into the sheath and it then frays. You likely will have to devise an alternate plan for side lights. In my case I ran a second harness from the tail lights to the side lights. Not a big deal but could be easier if the company supplied the harness with the sheath separately so once you have your wiring set up you could then add the sheath. One last thing, the wires on my harness were not the same length and I had to add a 1 foot piece to the end of one side of the harness to make it to the end of the trailer so best you measure both runs before installing. Overall not a bad product and does the job.
Trustpilot
3 weeks ago
2 weeks ago