Hey guys why would you need to install copper foil shielding around a Telecaster neck p/up ? The p/up is encased in a metal shield anyway isn't it ? The only way it would need other shielding is if the metal casing wasn't earthed, right ? What am I not understanding here ? I think I need a couple of second opinions on this. Any and all comments are gratefully received - thanks heaps guys, Dmondo. ;D
There are several reasons to do this. First, as Ash points out, the cover doesn't shield the back of the pickup. Second, the cover is earthed through the negative pickup lead- and part of the point of shielding is to isolate shielding connections from signal connections. So, in shielding a Tele (as per JA's instructions on the original Guitarnuts site), you either have to make sure that you don't allow the shielding to touch the cover, or you have to disconnect the cover from the pickup neg lead and ground it to the shielding.
If you are going to do any series wiring, which necessitates "elevating" the pickup neg wire, then it is required to disconnect the pickup cover. See the instructions for JA's "T-riffic" mod for further discussion of this procedure.