Info about the original:
This device has found its way into many of Eddie Van Halen's recordings, adding a shimmery velocity to lead passages or a more dramatic swoosh to muted strumming. Not just for guitars; it works well with bass, keyboards and even vocals. Vary the speed from a subtle, long cycle to a fast, watery warble...and myriad vintage vibrations in between.
[Updated 21st May 2014 - re-jigged to make better use of space but all connections as per the original verified layout]
Modified version with added depth control. The Depth 1 wire needs to connect in the hole under the link, so it's probably advisable to raise that link slightly to give you room.