I have a 1995 BMW 325i convertable with an electrical problem.

The top will not go up or down. It worked for awhile, but yesterday when I was trying to lowere the top the electrical motor quit. There appears to be two wires running into the fuse box under the hood for this purpose. I do not have a tech manual covering the electrical system so I don't know if these wires are factory or something that was added. I just purchased this vehicle a few days ago from a private owner.