mac, besides plenty of other things, I would start by checking the starter. If it does not crank over but has power to the starter solenoid, replace it. you can find some good instructions for the starter replacement [http://forum.miata.net/vb/showthread.php?t=264064&highlight=starter+bracket|on here.]To check the solenoid, check on [http://www.wikihow.com/Test-a-Starter-Solenoid|this link.] Different vehicle, same principle. Hope this helps, good luck.