Ignition Switch

^^THIS HERE^^

The functional path which energizes the starter relay is:

Ignition switch in "start" feeds yellow "start" wire goes out into engine bay through BULKHEAD CONNECTOR to start relay and to one "push on" flag terminal. Through the magnetic coil of relay and out remaining flag terminal to brown which leads to neutral safety switch ..............and that switch is GROUND when in park / neutral.

If you hear the relay click but the starter won't operate the relay might be bad. If you jumper the two large exposed terminals of the relay and if this causes starter to operate then the relay is likely bad