Quote: I ran a 4 gauge wire from the output stud to the starter relay. Since the fan flashes to 59 amps on startup I wired it directly to the alternator.
Key point on the heavier charge wire. A 90 or 120 amp alternator along with heavier electrical loads will toast the factory setup quickly. A heavy charge wire from the alternator directly to the fender relay stud or battery is important. A fusible link in the charge wire near the fender relay will provide protection against shorts. 6 guage charge wire and 10 guage fusible link would work in your application. NAPA usually stocks the heavy primary wire. Autoparts stores don't usually carry 10 guage fusible link. An auto-electrical shop would have it.
With this setup, your ammeter is bypassed won't register. You need to add a voltmeter to monitor the system.
