I have very old fog lights with glass lenses (70s?) The halogen bulbs plug in via a wire to the housing. I had them wired to my repop fuse block that was supposed to prevent a short but I got a cab full of smoke as I left the gas station a few weeks back. Does anyone know how how large a fuse I need to avoid this or am I supposed to have a transformer in between the accy and the power? As you can see from the picture the fuse block cooked even after the fuse blew. Luckily I didn't have anything else connected to it.