I know what the problem is now to find if anyone sells just the gear the keeps breaking. This is the 2nd one I have replaced in muy 1998 Mustang GT and now I have two gauge clusters that dont work. Anybody know if another Ford might have the same setup. Here is a cell phone pic of gear and were it goes.

 

It looks like this site sells it http://www.odometergears.com/subpages/ford.html .

 

Wow....did you strip that thing like I think you did?

 

Yeap you have to to get to that gear its not hard real simple. The plastic on that gear gets really soft that website makes the gear out of a diff plastic so hopfully I wont have this issue again.