It's not something I see on Strats and teles. I wired up a jag several years ago and was having problems getting it to work. So I took it to a local shop to have it looked at and the guy told me I was missing this resistor. I can't remember the specific problem I was having (been too long) but I remember thinking it was weird that the missing resistor was the problem. So my big question is, if I change the pots to 250k do I need to change the value of that resistor? I used 1 meg pots in my jazzmaster build and when I switched them to 250k it became much more enjoyable to play. So I'm starting there with my jag build. @moosie I'm tagging you because I know there's an 80% chance you'll chime in with the correct answer and maybe some great diagrams. You're under no obligation to reply, but I figured I'd just make finding the post a bit easier for you.