Reporting question for Footswitch Box - for Marshall, Two Button, LED

Product:
Footswitch Box - for Marshall, Two Button, LED

Question:
Which models need a separate battery and which ones don't? Electronic parts store customer tried doing it himself and it didn't work. He used bi-colour LEDs. Would that be a problem if the amp powers the lights?

Answer:
The LED's need power either from the amp or from a battery. We have no way of knowing all the models that provide power to the LED's in this footswitch. You will want to review the manual for your amp or contact Marshall. We are unsure why this particular footswitch is not working.