My friend has an old Suzuki that won't charge the battery. He's got a new alternator, and when he revs the engine the headlight gets brighter. There's three wires from the alternator. One to the headlight, one to regulator, and one to rectifier. The one to rectifier seems to change alternating current into direct for charging the battery. He can't get a new regulator or rectifier, and the two he got from the junkyard didn't help. Can anyone tell me if any old regulator/rectifier from a Honda, Yamaha, or Chevy for that matter, will work?