hi, i have a 86 toyota mini cruiser i tried to hook up my noracold 3 way frig to 12 volt by diagram when i hooked up the groung it sparked so i unhooked it now my coach lights wont work i checked all the fuses and there all good ,now they will work when its pluged in and when the engine is running but not when i turn it off is there a nother fuse some where they worked before i attemped ti hook up the 12 volt frig also does any one have a manuall on this rv thanks for any info