From what I can tell looking at the wiring diagram in the 58 shop manual (pg 9-57), the red wire (12 ga) goes to the ammeter along with a 12 ga black wire that goes from ammeter to starter solenoid. I can email you a pic of the diagram if you PM me your email addy.
Last edited by Cablesmill; 06/16/2017 5:06 AM.
