A new Buzz...Ground issue??

[dmraco]

I have encountered a weird buzzing in my electronics on a build.  Everything plays and sounds great.  However when I touch either of the two screws that hold in my humbucker to the mounting ring (the adjuster screws) it sounds like a just dropped a ground.  Horrible buzzing.

I can touch anything else including the pickup bobbins and bridge with no issue.  What gives??

 

[Verne Bunsen]

Is it a 4-conductor lead? My first thought is that the hot and ground have been reversed, and so the pickup frame is on the live side...

 

[dmraco]

Is it a 4-conductor lead? My first thought is that the hot and ground have been reversed, and so the pickup frame is on the live side...

yes it does...I will check it out.

 

[mayfly]

The man speaks the truth - the hot side is on the pickup frame.  As a test, short the pickup frame to the bridge.  If this is the case all sound will go away

 

[Logrinn]

I have the exact same thing happening on the bridge pickup on my Super-Sonic, and it seems that the pickup frame isn't grounded.
I could confirm that the neck pickup had a connection between the pickup frame and the ground anywhere else on the guitar, but the bridge pickup frame were not connected. And when I accidentally placed my fingers on the height adjustment screw I got this same buzzing as described above.

The next time I change strings I will open up the guitar and reconnect the groundwire to the pickup frame and hopefully it will go away.