After trying my Nailbomb bridge pup in a few other guitars I finally put it back into my Charvel which has Irish Tour middle and neck pups.
The Nailbomb by itself seems fine but if I turn the volume down to zero I can still hear a signal, whereas if I switch to the single coils its completely silent.
Not only that but position 2 on the selector is wired to split the humbucker and run the slug coil with the middle IT, the sound is extremely bright and thin, like a bad AM radio. I'd say it sounds out of phase, it was certainly not like this before in fact I previously position 2 was a bit too dark.
The wiring and grounding looks ok (by my poor standards), the red is to hot, the green and white are on the tab for splitting and the black and silver to ground on the tone pot. The ITs are untounched (white to hot, black to ground). Touching the pole pieces with a screwdriver shows that both the middle pickup and bridge slug coil are working and the screw coil is split to ground.
Any ideas if it's just bad solder joints or have I managed to wire it out of phase? Also any ideas why I can't turn the pickup down to zero on the Volume pot?