I been over in electronics and can't find anything on wiring the trim sender. I'm looking at a 86 manual and it shoes it goes to a terminal right above the reset button. Brown, white wire on it. Mine is the 81 mercruiser 260 and cant get nothing to work. There was a white wire in the back I hooked it up to neg on battery and got nothing, I hooked it up to positive and got the gauge to peg. I assume that's right now I just have to find out were to plug the two trim sender wires in.