I replaced the ignition switch but there is a continued problem with the starter continuing to run after the switch is tuened off. Also the run circuit does not seem to energize. Does anyone have an idea about the solution? Could it be the starter relay switch? Does anyone have a wiring diagram?

 

hmm.. it could be the starter relay.. you may start looking for vacuum leaks. also it might be because of some poor grounding or some loose connection. check also idle control valve and rubber pipe from the mazda air filter to the throttle body. try to check on these things. inform us if you notice other things..

 

I agree,

I'd definatly check out the things listed about. My bet is the relay