Trailer electrical connection question. My new tractor is out at my farm and I am not near it right now. I want to put a plug on my new 12v diesel fuel pump that I can plug into my tractor rather than using the alligator clips. Does anyone know which connection it is? I can't find anything in the manual but I know it has one. I think it may be a 6 pole round pin but would like to confirm that before I pick up a plug for it. Then, is there an easy way to figure out which is the negaive and positive so I can hook it up properly? As you can tell, I am not an electrician!