Originally Posted by upallnight

Your indy can check the signal wire to the starter solenoid. If it doesn't have 12 volt when you turn the key to the start position than that is the reason why the starter is not turning.

There are many reasons why there is no 12 volt to the starter solenoid. On my Audi the signal wire had a break in it so I just located the break in the wire and spliced a new wire from the break to the solenoid.