dual electric fan mounting question ?

oh yeah when I got the fans they were working fine from the member and when I went to fire them up only one was working. I ended up dissecting it thinking I had nothing to lose anyways and found the pickups were a little sticky and the inside needed cleaning. I felt a lot like Edd on wheeler dealer, I was pretty proud of myself. well, on top of fabricating all this from scrap metal in my garage.