I have searched all over for the specific diagram for the clutch safety switch with no luck. I want to troubleshoot a no start. My buddy is stranded and I am trying to help him out. All power is on in the truck but the starter does nothing. I wanted to start at the switch and work my way to the relay the starter. I could just jump the starter to test it but it doesn’t answer what the fault is (assuming the starter is ok).

 

Look in the diagram for the starter circuit.

 

I will review again. Thanks. At this point it will be for posterity sake as old school hammer modulation exposed the starter as the issue.

 

Or just put the trans in neutral and jump the starter relay with the ignition on.