Forum Discussion

NanciL's avatar
NanciL
Explorer II
Nov 22, 2014

Electrical truck to trailer connection question

Can I use an extension cord to connect between my truck connector and my trailer cable connector ? If yes do I have to worry about a voltage drop if the distance is too long. I park my trailer in ...
allen8106's avatar
allen8106
Explorer
Nov 25, 2014
Jack,

While definitely no expert in my humble opinion as long as you have the 7 pin connectors you should just be able to what you are thinking of. The #4 pin is for 12 volt charging. As long as you have a wire hooked to both #4 pins you can plug the connectors in as you suggest. My only recommendation would be to up size the wire by two wire sizes.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,330 PostsLatest Activity: Oct 30, 2025