Gretsch G5700 Electromatic wiring scheme

[David Mansfield]

Does anybody know the wiring scheme for this guitar? I'm baffled. The pickup has only one wire connected to it (a thick red "hot" wire). The black ground wire just goes into a hole at the bottom of the pickup cavity and I don't know what it actually connects to. It looks like there's shielding paint both in the pickup cavity and the cavity for the controls, but I don't see how the pickup cover makes contact with the ground. Gretsch has no schematics online, and I haven't been able to Google anything.

[Brad Bechtel]

Have you tried contacting Gretsch directly?

[David Mansfield]

I have; waiting for reply.