Bummer ! I accidentally reversed polarities on 2 deep cycle batteries after taking them out for charging and reconnecting everything at dusk. They are both hooked up to 1/2/1+2/off battery switch on 94 boat. At first the switch had resistance when turning until... sparks flew.
Now my head unit along with the cabin power inverter dont work. I checked voltage on both batteries and wires going to the inverter: i get good viltage of 12.8V so there is power. Fuse on back of head unit (cd/radio) is not blown. Could it be the actual battery switch thats gone bad even though i tested it.. All lights, blower along with engine cranking work on all positions. Boat starts. Is it possible to fry head unit without damaging fuses or is likely it melted a wire and this is the reason for it to not turn on ?
Now my head unit along with the cabin power inverter dont work. I checked voltage on both batteries and wires going to the inverter: i get good viltage of 12.8V so there is power. Fuse on back of head unit (cd/radio) is not blown. Could it be the actual battery switch thats gone bad even though i tested it.. All lights, blower along with engine cranking work on all positions. Boat starts. Is it possible to fry head unit without damaging fuses or is likely it melted a wire and this is the reason for it to not turn on ?