Hi, hoping someone will help me with this one please.
I've assembled a parts bass with a J neck pup and MusicMan bridge pup.
No neck as yet but after soldering I tested the electrics and have a strange one (for me, anyway).
Tapping the pole pieces with a screwdriver, the J and bridge back 4 MM pole pieces are equal.
The front 4 MM poles are barely audible.

I used an SD MM + P wiring diagram as I'm not interested in series/parallel.
3 pots, V1, V2 and tone.
The MM V2 pup arrived with red and...

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