I currently have 4 pin for driving but I want to see if I can charge while in motion. Would it be possible to hook up charging only through the 7 pin so I don't have to rewire the entire trailer?
It can deliver a modest charge for a house battery in a camper, as well as charge a small battery for the breakaway feature of electric brakes. Trailer manufacturers aren't concerned with anything past that, and the 7-pole system is a cheap way to accomplish the task.So what is the intent of the 7 pin setup if not to provide a charging current to the trailer? Genuine question: historically, why did 7 become the standard?
Electronic Brakes.. the battery on the trailer is just for emergency break away on the vast majority of commercial/cargo trailers on the road.. often all you need to do to know a trailer has brakes is look to see if it has a 4pin vs 7pin plug.. you putting a 7pin on a trailer w/out brakes would be rather abnormal and you might put a sticker or something indicating its not equipped w/electronic brakes.So what is the intent of the 7 pin setup if not to provide a charging current to the trailer? Genuine question: historically, why did 7 become the standard?
What do you call that? I googled AC coupler and just got pictures of air conditioning plumbing connectors.