I know that most pickguards on a precision have a piece of foil stuck to the underside presumably to provide some screening. Back in the late 70s / early 80s Andy Piercy was bassist with After the Fire had a blue precision with a clear pickguard and you could see the rout & wiring. I have a blue precision and fancy a clear pickguard but I am concerned that not having screening may cause problems.
Can anyone give me advice on this?