How do I hook a 3 pin connector to a 4 pin?
First post here! I recently purchased a small camper and the runnig lihgts(I assume thats what it is) have a 3 pin connecter, can I just plug it into the 4 pin splitter I have or do I need an adaptor?...
Forum Discussion
On the surface, it appears that if you plug it into a 4-way on your tow vehicle you SHOULD have Stop, Right Turn and Left Turn (if the wiring is true to standard trailer wiring). In lieu of any other wiring going to the trailer you wouldn't have running lights. Not sure if this is even legal in California. There's an outside chance that the 3rd wire (not the green or the yellow) is the running lights and the ground is through the hitch ball using the frames of the trailer and tow vehicle for a ground path. But if you're plugging into a properly wired 4-way on your tow vehicle that shrouded prong on the left will be plugging into a ground.
