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You're rewiring an old trailer and want to do it right. This 25-foot Y-harness lays in smooth, splitting left and right so you don't need jumper wires. Splice it in, test it, and you are ready to go.
This 4-pole Y-harness features a wishbone design that splits the wiring for easy routing down both sides of the trailer, eliminating the need for jumper wires. Full-length ground wire ensures consistent grounding for reliable trailer lights. The 25-foot length is ideal for longer trailers, providing ample reach to all lights without extensions. Color-coded wires simplify installation, and the plastic housing helps protect against moisture and grime.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody Andy here with etrailer.com. Let's take a real quick look at this Towsmart 4-Wire Y-Harness connector. Now this 4-pole Y-harness features a wishbone design that's going to split the wiring for easy routing down both sides of your trailer. That's going to eliminate the need for jumper wires. And this is altogether 25 foot long, so this is gonna be great for longer trailers giving you ample reach to all lights without extensions. The color-coded wires are gonna simplify installation, then the plastic housing's going to protect against moisture and grime.
But I think that's going to wrap up our real quick look today. I do hope that our brief time together was helpful for you, if you happen to have any other additional questions don't hesitate to reach back out to us we do wanna make sure that you're getting exactly what you want and need. We'll again, my name is Andy, thank you for joining me.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
Lazer S.
9/16/2025
Glad to hear it, Kenneth! What kind of trailer did you rewire?
Kate F.
2/18/2026
I am sorry that you thought the ground was that long as well Mark. Do you have a unique trailer that you need to get the ground back further to be able to attach it to a clean metal spot on the frame?
Kate F.
2/18/2026
Do you have a question about this Trailer Wiring?
Info for this part was:
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Lazer S.
11/18/2025
I must admit to being surprised to hear that, Barbara. We have sold a pretty large number of these and this is the first time I have heard of there being an issue. Does the plug on your vehicle get a lot of use? And is it factory or aftermarket?