That is LIKELY a ground wire. Often it will attach by some means to conductive paint in the cavity of the guitar to act as shielding to reduce hum. Sometimes it is soldered to the back of a pot.
Search this site for a configuration matching your guitar for schematic.
Answers & Comments
That is LIKELY a ground wire. Often it will attach by some means to conductive paint in the cavity of the guitar to act as shielding to reduce hum. Sometimes it is soldered to the back of a pot.
Search this site for a configuration matching your guitar for schematic.
http://www.guitarelectronics.com/c=WdFPr9QORFrwx9ORFVwTPM96v/category/wiring_resources_guitar_wiring_diagrams/