I am at a loss. I have a Chevy 350 with starter issues. I have a new optima yellow top battery, a new starter switch, and a new mini torque gear reduction starter. My alternators output is 14.5 volts, the batteries big ground wire is bolted to the starter, the alternator is grounded to the battery using the small ground wire. The large red wire goes directly to the starter solenoid, there is also a smaller red wire from the alternator hooked up to the start solenoid. The starter solenoid ignition wire puts out 12 volts. However, when I turn the key I get nothing, absolutely nothing. I've checked the grounds, I've checked the connectors, I've checked just about everything I can think of. Any ideas or suggestions?