[TR] Sources for TR4A shift knobs with a momentary push button switch (preferably lighted) to control my overdrive?

[Dave Connitt]

Hi All, 
Several months back I purchased a logic driven overdrive controller for the A-type overdrive in my TR4A. It needs a momentary switch to turn it on and off. The controller also has an LED indicator option so it would be nice if the switch had a built-in LED feature too.
Anyone ever seen one?
Thanks,
Dave Connitt

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