Hi Bill,

If we're talking about regular (mechanic) pedals, not midi, then the only thing in it is a microswitch (momentarily on).

These come in a wide variety of sizes and models, so you should need to open the pedals and check the model. Regular models are available at Radio Shack, and to replace them you need a soldering iron because you need to desolder/solder two wires on it, that's all.

Roy

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Have a nice day