wiper motor wiring issue

[flashdad]

hey guys, I haven't found an answer to this issue in the forum: My wipers weren't working so I pulled it and tested it, it works fine. So I figure it's in my wiring. I cut and rerun all the wires except the power wire and it still wouldn't work. So, I cut the yellow power wire and connected it to the open cig lighter spot on the fuse box...they work! however, when i went to reconnect the wiper arms to the motor, when I touched it with a screw driver, it sparked and the motor began running when the screw driver made contact. I'm no electrical guy, so I'm just doing what I can. Can someone help me fix this correctly? Hard to drive here in Oklahoma with the storms and no wipers. Thanks in advance for any help.