I have a sustain pedal for my keyboard. Would plugging it into my guitar damage the guitar,amp, or the pedal?
Quote by kaptkegan
Don't think I've ever been sigged.

I pretty much never leave the drug thread anymore.
I don't think it will have any effect on the workings of your equipment.
Prs se Holcomb is the answer
You can use it as a tap tempo for a delay pedal, but other than that I can't think of any reason to use it as part of a guitar rig.

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great avatar TS, i'm a huge fan of calvin.

the pedal? no.
I wondered why the frisbee was getting bigger, then it hit me.
A sustain pedal is a momentary switch (normally open with some exceptions like Ensoniq). There are some amps that will switch channels/patches with a momentary switch but they are very few and far between. Normally channel switches are latching.
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What you do is run your keyboard through a fuzz pedal....

and our avatars are matching (sorta)
I'll pretend I can mod your amp but break it instead.
I used my old damper pedal for the longest time as a channel switcher for my amp.

And everything's fine!