I'm looking to put a very early Bill Lawrence L-500 Neck with a DM Area T 615 at the bridge. The wiring on the DM is standard. The Bill Lawrence isn't. It must have been made before they standardized things. It only has red, white and black wires plus a shielding.

The guitar the L-500 is in has the shield and black to ground and the red to the pickup switch. The white was just taped off. Does anyone know what that white wire does? Although new ones evidently have a green wire also, there are no other wires coming from this pickup.

I tested it and both coils are live and the tone is good so it's working as a humbucker.

I could just hook it up the same with the DM and see how it works. If things are out of whack, I could then reverse the hot and ground on the DM. I don't want to miss some wiring option that might be good to have, though.