If I were to install a two Bosch relay system on my '58 to solve the cut-out of headlights after 20 seconds on high beam: do I splice into the small lighter gauge wires that lead to the headlight bulbs from the "high-voltage" side of each relay that several sites recommend 12 ga wire? I ask, since I cannot find wire ends that will fit over the tabs on each headlight. If I could find the correct ends, I have no issue running the 12 gauge wire. Does anyone have a source for this size of wire end?