Do I need power at pin 4 on my tow vehicle?
I think y'all think I be dumb. I know I need to plug that big black rubber thing on my trailer into my truck (what else will keep the trailer from falling off the ball ;)) This year we're going to...
Forum Discussion
Terryallan wrote:
On Fords there is a relay that must be installed to charge the trailer. not real sure about the others.
This is not 100% accurate. My 2011 F350 does have 14.35V on Pin 4 and there was no aftermarket relay installed. There may be cases, as you say, of some Ford trucks requiring a relay, but not all of them. There was nothing said about which model of Ford truck you were referring to, just a blanket Ford statement.
