Well I'll probably do the rewiring this week.

It seems like the bridge pickup was badly installed. In fact it the wrong way.

I don't know a lot about this but as I understand it, the pickup is generating noise instead of reducing it. The bridge pickup that is.

This and what you guys suggested about bad wiring is probably the source of all this noise.

Anyway, hope I'll have time this week to wire this.(Well I won't actually be the one doing the wiring but I'll take the credit since you guys don't know my technician :) )