I'm in the middle of redoing my MIM Telecaster's wiring and swapping the pickups. Unfortunately my soldering iron died in the middle or I might have finished it over the weekend. Anyway.. my guitar has the "shielding paint" in it. It has a grounding screw in each of the cavities, and the original wiring has several wires attached to it. Bridge cavity: - Bridge screw to cavity screw - Bridge pickup ground to cavity screw (pickup is plastic with no metal plate) - Cavity Screw back to the volume pot Neck cavity: - Pickup ground to cavity screw (can't really tell if the neck pickup is metal/plastic but my understanding is grounding this doesn't matter as much as it's not providing string ground) - Cavity Screw to volume pot Control cavity: - Cavity to Volume pot My new pickups are metal.. instructions say (and it makes sense) that the metal plate will ground the bridge through the mounting screw + the pickup ground wire. (The plate is jumped) Do I actually need the cavities grounded (particularly bridge cavity) if I've got the metal plate? I'm trying to clean stuff up but if connecting the paint to ground provides a useful benefit (shielding?) I'll keep it. It's just a bunch of extra wires that are kind of messy and are not included on most of the wiring diagrams.