If I just make slight contact with any string, when nothing else is touching any of the other strings, it makes a static sound, similar to when you touch a string to a pickup but not such a bang like that. Is it my pickups, cable, amp, selecter switch, tone knobs...?
Could be the cable that connects to the input jack. I had a similar problem, and replacing the jack and the cord was my solution.
Treble>Epiphone Prophecy EX - MXR micro Amp - MXR Blue Box - MXR Fullbore - MXR Noise Clamp - Vox AD30VT
Bass>Ibanez BTB505 - MXR Blowtorch - MXR D.I. - Peavey MaxBass 700 - Peavey TVX410