Their is a fuseable link for the ignition switch blk 16 ga. The links are down by the starter. If he goes to a scrapyard to get another one. Look at the small wires at the solenoid. Make a diagram always do this when doing something different. Also look at the big wires.
Clutch safety switch above clutch pedal. Neutral safety switch on side of transmission. Ignition switch on steering column near where it bolts to dash.
Starter relay red to relay blk to starter motor. Red/lt blu to small connector. Use a test light and check for power when trying to start. It should shut off with the key. Clutch pedal or transmission not in park or neutral should also shut off power.
You can also make a fuseable link use two sizes of smaller wire. I think it should be 16 GA wire but double check. Check the wht/pnk wire from ignition switch. Then check RED/LY BLU wire to solenoid for power.