My brother just traded into a well kept 1986 Skeeter. It is a very nice looking and running boat. He did not get any manual with the boat. He says there is an 8x10 plate at the front of the boat with a 3 position switch labelled 2-12v., 12v., 12-24v. and below that it says charger. He says there is a plug at the bottom of the plate that looks like a trailer plug. It has a cover cap on it and it has a three prong pin plug in it. He is wondering if this is some kind of on board charger and takes a special cord? Any info on this would be appreciated. Thanks . . .