Minolta Auto Winder D Motor Drive Made in Japan Used with case - for parts

Description

Hi there. I recently bought some items and in the lot, came this item... a Minolta Auto Winder D Motor Drive. I don't know anything about this, other than it looked pretty simple.   - I put the batteries in and turned the switch, but nothing happened. They're rechargeable batteries, so I Made sure they were good, tried again, but nothing. Possibly a loose wire? Who knows. Want to try to repair one? Feel free to bid.
Battery compartment had no corrosion, there were no batteries in it when I bought it. There will be no batteries in it when you buy it, they're just to show what the item was. I don't know how to repair these items, and I don't have a minolta camera that takes this anyway.
Condition is "for parts". Shipped in a padded envelope with USPS First Class. or a flat rate priority small box.