Guitar keeps picking up electrical interference
Noise and interference can be a big problem – particularly if you’re using single coils. Unfortunately, lighting, wiring, and radio signals vary from location to location, so sometimes you might have to live with it. However, you can prep your guitar to avoid interference as much as possible.
Start by checking that everything is earthed properly, because if it isn’t, this will introduce annoying buzzes. Keep your jack leads and patch cables as short as possible, too (more on that later).
Finally, try shielding the inside of your control and pickup cavities (and underside of your scratchplate on a Strat). This involves using conductive paint or foil to line the inside of the cavities. You’ll need to remove the pickups and controls first, but worth it, as it can be a brilliant noise-blocker!