I put a Lull TB pup in the bridge of my Epiphone Thunderbird, and for the longest time I couldn't figure out why when I turned both pickups up, the volume dropped in half and sounded weak and tinny. Roll one or the other volumes off slightly, and the other would jump to life. I was looking at the TV Jones site (makes of the Lull pups) and read that:
"If you buy a TV Jones pickup and combine it with another pickup on your guitar and the resulting sound is thin or "banjo-like" with no lows, your pickups may be out of phase. TV Jones pickups are reversible. You can simply reverse the black & white wires (black=hot white/shield=ground)."
So I tried this, swapping the black and the white - and voila - you can now turn both pickups on full and the combined sound is as it should be. However, in order to get it to work - I had to leave the bare/shield disconnected. When it's connected as it should be to the pot - no sound. But otherwise - it works just fine. The problem I'm having, is that when I play the Bird through amps that have an old school 2-prong cord, if you touch the Lull pup, it buzzes like crazy. Throwing the polarity switch on the amp helps but still buzzes badly. On my modern amps with three prong cords, there is no buzzing issue. Any idea what can be done? I tried connecting that shield wire to different locations - but everytime the signal cuts out.