True Mods 7-Way Junction Box for Trailer Cord Wiring [Brake & Light Control] 7-Pin Wire Cable Connection Terminal Waterproof Distribution Splice Block for RV Boat Camper Travel Utility Semi Trailer

This is hands down the best way to wire a trailer, or replace a worn or damaged connector. Forget about putting a replacement connector end on your old wire, this is just a little bit more money and the molded end will survive being dragged on the ground when you forget to plug it in, will survive being run over or pulled out by yanking on the wire out of frustration because you didn't mount the plug on your truck where you should have and you have to crawl underneath in the mud to disconnect it.Bottom line, this is the way to go. Excellent value, the junction box has plenty of room and options for cable routing and mounting, it's water proof (if you trim the included grommets carefully, if not it's ok too, as it comes with extras) it's color coded for most normal installs (and the plug whip) and makes trouble shooting childs play when you loose a tail light or marker light.Just do it. I keep these in stock at my shop and it's the only thing I will ever put on a trailer, or repair a trailer with ever again.Every trailer I have ever put one of these on, is still in use, still working, and has endured severe use since installed. Some in excess of 3 years now.

This is a nice box, with thicker and stronger walls than most others. They used a nice material for this box that seems to be more durable than most of the other trailer junction boxes I have worked with. This makes it an excellent value. However, the nuts included on the studs are not stainless and do not have nylon inserts. So I bought some #10-32 stainless nylon insert lock nuts (REMEMBER: ALWAYS use a waterproof lubricant on stainless steel fasteners, such as SuperLube) to use in this box, along with stainless steel flat washers. If I remember correctly, this box was made in Taiwan, not the slavery/tyranny state of China, so that is also good.Be aware, none of the boxes like this are waterproof, but reasonably weather resistant. Just make sure you leave a small opening on the down-facing side so any water that gets inside can easily drain out.Also, there was a plastic coated paper label for the terminals included, but it was not self-adhesive. So I used some clear "Goop" glue to attach it inside the box and covered the label with more of the same glue to make it waterproof.

This junction box made rewiring the trailer so much easier. I was able to add in a few auxiliary lines with out having to add extra splices. Spacious but still fit on the frame rails.

Great sturdy boxcomes with everything you need to installVery versatile and I'm happy i purchasedNegatives-Not much space for large amounts of wires. The box could be like 10% bigger in a any direction or have the studs set up better, not the worst thingHowever, the worst flaw is the studs. They dont have a hole drilled in them so you can feed wires in, you can work around that. However they have almost no space to get my fat fingers into wrap the wires around the stud for the nut to hold. Then to top it off they only have 1 nut per stud and a TINY washer. Should be a large flat washer or even better a double set up per stud. Then you can lock one wire in with the nut and washer, then work to get the next wire wrapped not he stud and tighten it down with a washer and nut.Just some very simple things that are missing, also the studs cant hold larger gauge wires from my trailer. So half of them i just ended up twisting together with wire notes inside the box. Still great for what im using it for but it is a very "specific" set up that allows it to be utilized. Just things to be aware of when shopping.

I’ve rebuilt several trailers, and have always preferred wiring in a 7 way box to ease with trailer cord replacement, adding lights and accessories or troubleshooting down the road. These are some of better boxes available, not top of the line like Haldex or Midland, but for the price you can’t go wrong. Like being able to secure cords with the clamps, just don’t over tighten as they’ll break the straps.

What I expected fit just perfect plent of room to run and keep wires organized Ease of use:can run your wires nicely in side and seals it tight

It's perfect

Not all wiring harnesses are created equal. If you buy an imported harness, you may not get the correct colored wires. Be sure to read the wiring diagram before proceeding. Color code your trailer wires before dissasembley and your install time will be greatly reduced. Great quality for the price.