Engine won't turn off.

I answered the first time you asked. Taking a few steps backwards, sounds like there might be some modifications to the vehicle. Is there anything tapped in electrically to the wiring? It doesn't seem realistic that there's some kind of factory defect here; these systems are pretty solid and don't have issue that I am aware of. I would look for physical damage, modifications or electrical components added on, as well as possible water intrusion somewhere causing electrical issues. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops