GM 1 Wire Alternator Self-Exciting 100 amp. 100 may be overkill but it works. $95
. A GM 1-wire self-exciting alternator, often a modified 10SI model, simplifies wiring to a single battery connection for power, removing the need for external voltage regulator wiring or ignition excitation. It automatically "excites" (activates) the charging system once the engine revs past a certain RPM, typically 1500
