I installed a Seymour JB Jr in the bridge position of my strat. Initially, the volume seemed low on the pickup relative to the middle and neck single coils. According to Seymour Duncan's instructions, which are AVAILABLE HERE by clicking on "wiring instructions," I needed to reverse two wires to rectify this (black goes to ground, green goes to switch terminal). I did that, and now the output seems to be where it should be. This install seems to have cost me the quack tone when using the bridge/middle together. I am not sure if I made a mistake or if this is comes as a consequence of having a humbucker in the bridge now. Fortunately, I still have it with the neck & middle. Just hoping somebody has some experience with this... Not sure if it matters, my strat is a little different. It is an FSR model with body mounted pickups (no pickguard) and one volume, one tone (bridge is wired to tone knob).