All ToneStylers have one RED signal wire and one ground wire (or pair of ground wires), which are provided in several colors and types: a GREEN wire, a BLACK wire, a CLEAR wire, and/or a copper shield wire.

If two ground wires have been provided on your ToneStyler, just solder both grounds to the same ground point shown in the diagram... usually the metal case of a volume pot.

General suggestions for proper guitar grounding:
Most guitars feature a control mounting surface covered in a metallic foil or a metallic paint that is grounded. This is helpful, but is not guaranteed to fully-ground your controls and circuits for optimal performance and hum reduction. In other cases, a metal control plate may appear to provide a perfect ground surface for mounting controls, but the metal may be clear-coated or anodized to prevent oxidation; this can prevent the controls from being properly grounded. For best results, always solder ground wires between the metal pot cases or bushings, and the ground terminals of switches and jacks, to a single common ground point, usually chosen as one volume control's casing.

If you are installing a 463 or 500 Series ToneStyler, the metal case and the copper shield wire have been soldered to the CLEAR ground wire at the ToneStyler's circuit board. The CLEAR ground wire is electrically common to the cable's copper shield wire, the ToneStyler's metal casing and mounting bushing, and the guitar's mounting surface.

The copper shield wire has been intentionally clipped off the open end of the shielded cable; it's unnecessary to solder this open end of the copper shield wire to the ground, as it is already soldered to the ToneStyler's CLEAR ground wire.

It's also unnecessary to use an additional ground wire or ground lug terminal around the ToneStyler's mounting bushing for additional hum reduction. Just solder the CLEAR ground wire to the guitar's ground, and you're done!

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