Just picked up a 93 Mighty Max (love this damn truck) and the #12 (tail) fuse pops. I can have the truck off, running lights off, put the fuse in, fuse doesn't pop, truck still off and when I try the running lights it pops. Sometimes I can put the fuse in, turn the running lights on and it doesn't pop, but when I turn the truck on the fuse pops after 5-10 seconds. I've checked the taillight bulbs and license plate bulbs, the cables from the taillights and licence plate light to the first junction on the passenger side behind the rear tire, all good, disconnected that junction, put new fuse, fuse still pops. Checked the cables from that junction to the next junction under the passenger seat, disconnected that, put new fuse fuse still pops. The wires go from under the passenger seat across the middle of the floor of the can so I guess next thing I could do when I have time is remove the seats and the carpeting to follow where the wires go from there. Wondering if there is there anything else to check before i do that? I've looked online and can't find a diagram for the lighting system. I'm not sure if there is a relay between the fuse box and the tail lights or where it may be located, I don't know where the ground is for the lighting system (I'm a YouTube mechanic and there'sno videos on this &#128514, any help on where these may be located or what else I can do before I start tearing the interior up would be appreciated.