Ok...here's the problem: one day, the starter motor failed to engage w/key. We had already replaced the ignition switch due to another issue and it's ok (also tried a spare I had on hand...still no go.) Then, we replaced the park/neutral switch (an ordeal...and it wasn't even bad!)...still no start. I can jump the two terminals on the passenger wheel well and the starter works great. Any ideas where to go from here? I'm almost ready to rig up a pushbutton start! I can hear additional relay(s) click when engaging the start position, so I believe the signal is getting through the harness.