Hello, I was wondering if anyone would know if there is a main fuse after the battery in case you hook the battery up backwards. I have done this and now I do not have any 12 volts in my 1995 kz sportsman camper. First let me explain, I hooked the battey up backwards and not knowing started the generator to the camper. I did not see any sparks from anywhere on the camper or battery. I then went into the camper and could use the 120 side of things. all worked and still works fine. When I realized what I had done I switched the cables to blk Pos and Wht Neg and then checked the fuses and breakers. None of these were blown or tripped at any time. But I still do not have any 12 volt line working. I have checked the battey and have 12.7 volts there and cannot find the fuse for reverse polarity if this unit has one. Being that at no time did any of the fuses or breakers trip I feel the line must have failed before it got to the fuse box. Again everything works with the generator pluged in, just no 12 volt line now . Any help would be greatly appreciated thank you