Treeclimber
Senior Member
I noticed while "kicking tires" that on various model campers and trailers there is a vast number of tow vehicle couplings or plugs. What is the standard Hi Lo connector? Or is there one type. I've seen 7 pin, 7 blade and an assortment of others. If there is a standard, I suspect that there should a designated wire color position. I thought the Blue Brake terminal was center, but now I see that the owner or wiring tech can do it anyway they wish(so long they match). Several on line schematics are all different. ???