Alright. Plugged in and wailed today.
The bridge position is BEEFY with the standard bridge pickup (highway 1).
The Piledriver doesn't give me any readings on the multimeter. I'm wondering if I ever actually tested it now... Glad I tried this out.
Position 2 is almost out of phase... it's a bit thin compared to what I'm used to. But my wiring was correct, I triple checked. Not sure what was off there. Especially as position 4 (series) sounds as it should.
Would out of phase pickups on a Tele influence the Series setting?
Anyway now that both pickups are balanced volume wise I'm not so annoyed at trying the neck pickup on it's own and it sounds VERY nice indeed. With distortion it's big and thick, with clean tones it's very jazzy. Lovely sound.