Following FatHack's wiring tech and ran into a situation that probably has happened to many... Wiring my headlamps. No existing wire other than some short strands from the headlamps that were in the car when I got it (basket-case). It's a 49' Ford. 1. Spliced in new wires from about 6 inches in from the headlamp socket 2. Individual ground from each headlamp to the body 3. Battery - NEG terminal grounded to the block When I clamped a headlamp wire from the lamp to the + terminal on the battery I got nice bright headlamps! Then the shit sparked, frizzled, and melted my wire. 6 volt bulbs with a 12 V battery? How the hell do I even tell whether its a 6V or 12V bulb? Thanks!