I'm waiting for an email back from Lindy Fralin's shop about this, but maybe someone could point me towards a good resource regarding pickup installation. I've always been reluctant, to say the least, about soldering and such, but I must be getting bold (or stupid) in my old age. Suddenly, I've turned a new leaf and want to tackle pickup installation. Anyway, Lindy's schematic is for a three conductor lead, my pickups have four conductors. The extra conductor is the outside screw (whatever that means). Any informative links would be great.