software

I replaced a pot on my 1992 Hamer USA Centaura Sunburst (HSS). I think I forgot to solder the bare wire of the Humbucker to the groud. The green is soldered. I don't see any problem without it grounded. What is the use of that wire (red,white,black,green,bare) ?

Why my position 2 on the 5 way switch is not noise canceling anymore? I got about the same noise as the single coil of position 3. I don't remember it to be as noisy. My position 4 is noisier than before too but it is cancelling a little bit. Those noise appeared before doing manipulation on the volume pot.

My pickups are stock but they are supposed to be SD. Do you know what type they are ?

Thanks for your help Mush

I'll anwer the first one and leave the rest for others.

The bare wire connects to the baseplate of your pickup. Basically, its a sheild against noise. If you connect it to ground, your reduce noise from that pickup.