If you have a Schwinn Tailwind, you might be interested in the manuals for it.
The following links are for the assorted manuals associated with this bike. Feel free to download them - Schwinn support will send you them if you ask.
Schwinn Electric Bicycles Manual Supplement
Schwinn Electric Controller Replacement Procedure
Schwinn Ebike Tech Supplement - Fuse Replacement
Schwinn Hybrid Pedal / Electric Bicycle Dealer Service Manual
Hopefully you find this useful! If there are any other manuals you have, please comment and let me know where to find them!