I rented a trailer with a rectangular 4-pin plug and this adapter helped me connect it to my new car that has the round trailer plug-in receptacle. It's pretty easy to install, just plug and go. I like that it can either be used on 4 or 5 way pin plug. The status lights are also a plus, it gives extra assurance to know if I have a broken circuit.
This is a great quality adapter! I've used other trailer wiring adapters before I bought this but they didn't last long. I've used this for months now and I haven't had any problems with it. I've left it hanging on the back of my truck through all kinds of weather. Great buy!
What I love about this adapter is its built in LED lights as a circuit tester. It helped me learn that the wiring had gone bad in my car, and not with the trailer wiring. This helped me save a LOT of time in diagnosing problems when my trailer lights didn't work.
It fits everything perfectly and works just as advertised. I have used it a few times and see no problems with it. Plugs in, lights up to let you know power is there, and stays in place while driving.
I'm very pleased with this! I have only used it with a 4 way flat but it works perfectly for that. No issues. I like the LED circuit tester as well.