Hoping someone can help me with this stupid issue. Older DJ5 with the original black and red wire Hanson pickups. Had it perfectly wired to an Audere 2 band Jazz preamp. Have an East J-Tone preamp I thought I'd swap in, easy-peasy right? I recal the bridge pickup green wire is the ground, opposite of what's logical. That leaves two black wires. How do I know which of the two black wires is the hot in that situation? I am sure the other would also go to ground? The DJ5 that pre came out of is newer and the Hanson pickups in that one has the more obvious one color, two black wire configuration where the two black tie together to ground on the preamp.