Hi All, This is a continuation of my last question (http://www.everythingsg.com/threads/grounding-questions.36803/) but it's a bit of a new question regarding grounding the bridge. As was discovered in the last thread, my guitar has custom bridge posts because of the bigsby and roller bridge (assuming this done from previous owner, pic 1). There is a bare wire in the control cavity (pic 2), and I thought it was the bridge ground. I did a continuity test between the posts and the wire, and there's none. If there is none, what is the best way to ground the bridge? Via copper tape extension from pickup cavity? Other ideas? Or is this something I shouldn't be concerned about? If this bare wire isn't continuous with the bridge, what is it's function and should it be ground on the volume pot as originally configured (pic 3)? Or is it useless and should be removed? Thanks in advance for any help!