Behold the innards of my Gretch Filtertron. After wiring my guitar up, the pickup wasn't working. This is as far as I've got on stripping it down.

As far as I can tell, the North ve is the black wire at top in this pic.

It runs through the North coil, and comes out through the red coil (the one below the top black wire - North -ve).

That red is connected to the red cable underneath (South ve?), which then comes out via the black cable at the bottom (the one with a bit of white shielding tube around it) (South -ve).

Filtertrons are wired in Series so this would make sense.

The green wire is attached to the pickup baseplate, which when assembled is connected to the chrome cover - shield.

Normally the baseplate shield is connected to the South -ve, as regular Filtertrons fully assembled only come with two wires - basically a hot and a ground, a bit like vintage PAF wiring.

However - I'm wiring this PUP into a Telecaster - style guitar using a 4 way switch, giving me a 'both pickups in series' option on the guitar. This requires removing the Filtertron pickup cover, detaching the base plate ground wire from the South -Ve wire, then running a separate ground wire from the baseplate (and cover) to ground, whilst the North ve (hot) and South -ve (pickup ground) are run into the circuit separately.

Getting to the point... finally... If I test continuity on the pickup, I get nothing (no continuity) between North ve and -ve, or North ve and South -ve. I do however get continuity between South ve and -ve.

Making me think that the North Coil is damaged.

Am I missing something, or is my pickup dead? 😔😔😔

Thanks in advance for any advice.