"The Folder"
Danelectro Pastrami mod
(youtube video)

You'll need:
Wire, soldering iron, solder, toggle switch, 10k potentiometer, push button (push for on)

A few things:
A 9v battery cannot be used with this mod, because the battery compartment
will be filled with the components. I modded this pedal before I knew how
to solder so please do not laugh at my poor skills! (If you do, understand that
I know how to solder correctly now!) The pictures aren't so great quality,
but you can use the handy cool paint picture to find what points to solder to.
You should be able to find the points easily. I did this mod three years ago,
and this document was saved on my computer so I don't remember anything
about it specifically. I gave the pedal away to somebody over a year ago.
Happy modding!