Grounding issues

[Pizzathehutt]

I have a fender aerodyne and changed out the pickups in it to dimarzio's. Everything was fine until one day it started buzzing like mad. Now whenever I play with the P pickup it makes a popping noise. They also seem to lose any tone every so often. And also since I have had the bass, it has had a very low output. I'm not sure how to fixt the grounding issues or anything else of the such, any suggestions?

[Son of Magni]

Sounds like it needs to be re-wired. Or at least completely checked out. Fender has all the wiring diagrams on their webiste.