Trailer wiring, 4 pin to 7 pin adapter


A bad day camping beats a good day at the office
So, I took the advice to change the 7 pin connector on the trailer and ordered a new one. To my shock what arrived was the same obscure connector that no one seems to have heard of that is already on my camper. As I am hoping to use the popup over Columbus Day weekend, I think I am just going to put a flat 4-pin connector on the trailer and call it a day. As the trailer does not have brakes (or the brackets to add them) I am not sacrificing anything. Cheers!

I hate to say it but I think this "same obscure connector" is the standard 7-pin. Perhaps the pins on your TV are slightly bent?

In any case, nobody here, nor Google, seems to know anything about alternate flavors of the RV 7-pin trailer light connector.

Anthony Hitchings

Super Active Member
Silver Supporting Member
Mar 2, 2019
Oakland, California
The "obscure" plug is the same as the standard plug on my 2003 Scout, and the same as a new std plug that I bought for a home-made test harness.

4 circumferential plug blades have narrower contacts - likely becasue they carry less current?