I got the same mule 610 issue not turning off. Need some directions on where that ground wire runs under the bed so I can run a test. Thanks

 

Hi, There is a smaller gauge black wire that runs from the ignition switch assembly to a tab on the coil. My wire had broken at the coil connector from rust. If you have similar problem..a new coil will take care of it.

 

mine is doing the same thing kinda, We were working cows and the mule was in our driveway no one around and it was trying to start with the key off. and when it started and runs, it is still trying to start. New battery. 4010 model 2012