This footswitch will work with your Fulltone Tube Tape with the serial numbers that are lower than 3479.
The LEDs will work from the 9V power source, but the pedal itself can be operated without them.
* You will need a TRS Cable, please see the cables category.
3.64 X 1.52 X 1.06 (Inch)
93 X 39 X 27 (mm)