1989 Pace Arrow Alternator Problem

Agreed that the alternator is not being excited. Delco alternators have a stud on the back. That is the high current output and connects to the battery, isolator or separator as the case may be. A two wire connector on the side will have one red wire that will have battery voltage with the ignition position. It powers the internal regulator and the alternator field. The other wire from the two wire connector is an indicator wire.