Kill Switch in action!
These switches have an inbuilt LED that can be hooked up to a 9v battery to add a super cool red glow to your axe.
To reserve the battery power run the negative wire to a stereo jack. The circuit will be switched on when the guitar is plugged in and disengaged when it's unplugged.
For more information, please see below link:
[ Ссылка ]
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