I'm making a trailer, and I need to weld the light box onto the trailer but the 1" x 1" square tubing I'm welding the light box to has wires in it. I should of ran them after but wasnt thinking and it was super hard to get the wires in there so I'm not taking them out. But how can I weld the box the the tubing without melting the wires? I was thinking short welds then letting it cool, Anyone have any ideas?