I rewound the second pickup using more tension and filled the bobbin as full as it would go and got 4.68 ohms out of it.
I haven't potted them yet but I hooked them up to the control panel. They seem to work fine. Lots of snap, very trebbly.
However, I'm getting huge hum when I touch the pickup covers. I soldered the covers back to the base plate and the wiring is correct based on the diagram the previous owner sent me.
However, this control wiring looks odd to me. The pickup ground wires are soldered to the ground lugs of the switch next to the pot. And, there is a small wire running across all the ground lugs of the switches (at the bottom of the center switches in the photo below). Seems to be a LOT of wires running to ground and I suspect that is the cause of the ground loop. But the Hofner wiring is strange to me.
Any Hofner experts out there? Does this look normal? Why are the resistors wired through the grounds?