1EA KEEP YOUR ENGINE 6 VOLT WHEN DOING UPGRADE SWAP 6V REGULATOR RECTIFIER S1249
KEEP_ORIGINAL LIGHTS_BATTERY (6V_reg_rec) S1249. WITH THIS YOU CAN DO AN ENGINE SWAP AND STILL KEEP THE ORIGINAL 6 VOLT LIGHTS HORN BATTERY AND WELL IT JUST MAKES THINGS EASIER! thus the regulator part of the regulator/rectifier.