Minimal splicing required, due to the split common light wire. Wiring is well protected by the integrated woven sheath. Price is very reasonable at thetime of this review.

Perfect for my trailer

This trailer harness seems to be of good quality. I like that it has a protective braided nylon sheath over the length of wires for the left and right side of a trailer. The 4-pin connector dust cap doesn't fit correctly, but is usable if you want the connector covered when your trailer is stored. Overall, I consider this a really good value at the current price point (under $10 in Jan. 2025).

Had an issue with trailer lights not working replaced all the wiring with this kit. Took about 20 minutes to install and everything works now. Easy way to solve a wiring issue.

It is a great product with a great price.

This is an insanely good deal for a trailer wiring harness. Unfortunately. It has been cold and raining since I received it, so I have not installed it yet. But, in preparation for install, I did bench test all of the wires and they all work perfectly as they should. The wires have nice sheathing that should protect them well as long as they are not hanging loose from my trailer. With 22ft of wire, this harness will easily fit my 12ft trailer. Recommended!

Good item

The 4 Pin 5 Wire Trailer Wiring Harness (22FT) is a practical solution for those needing to rewire trailer lights, particularly on trailers requiring both-side taillights, brake lights, and turn signals. Its 22-foot length is convenient for most standard trailer sizes, and the 4-pin flat connector is widely compatible with various trailers, including boat trailers.Pros:Generous Length:At 22 feet, this harness provides ample length for standard trailers and boats, with extra slack for flexibility in wiring. This is especially useful for trailers where routing requires a bit more length.Comprehensive Wiring:This harness includes a 4-pin, 5-wire setup that covers essential functions: brake lights, turn signals, and both-side taillights. This full feature set is ideal for trailers needing visibility on both sides.Weather-Resistant Design:Built to withstand exposure to elements, this harness holds up well in both rain and heat, which is crucial for outdoor and boat trailers that may face harsher conditions.Simple Installation:Users find this harness straightforward to install with clear, color-coded wiring that aligns well with trailer wiring standards. It’s accessible for DIYers and doesn’t require advanced knowledge.Secure Connections:The connectors fit snugly and securely, which helps prevent accidental disconnections on rough roads or long trips. This improves reliability, especially during prolonged or frequent use.Good Value for the Price:For the functionality and ease of use, this harness is reasonably priced. It’s a good choice for those who need a dependable wiring harness without spending a lot.Cons:Limited Durability for Heavy Use:While durable for regular conditions, this harness may show wear faster if frequently submerged in water (such as with boat trailers). Applying additional waterproofing or protecting it with tubing can help prolong its life.Basic Instructions:The instructions could be clearer for complete beginners. Although the wiring is color-coded, more detailed guidance would be beneficial for those unfamiliar with trailer wiring.Not Ideal for Large Trailers:This harness works well for most standard trailers, but it may be too short for very large trailers or those with extensive routing requirements. Measuring trailer length beforehand is recommended.May Need Extra Connectors or Hardware:Depending on the trailer setup, users may need additional hardware or connectors for a secure fit, especially if adapting to unique trailer models.Overall:The 4 Pin 5 Wire Trailer Wiring Harness (22FT) is a reliable choice for rewiring standard trailers and boat trailers, offering solid functionality and a straightforward installation process. Its ample length, color-coded wiring, and robust connectors make it suitable for most users, especially those looking for an easy, affordable wiring solution. Although it may require additional protection for intensive use or water exposure, it provides great value and performance for everyday towing needs.