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the positive output bolt was originally 1/4"
Non-Adjustable
Powerline Model 33-20 Battery Isolator (C
Pulley IS Included: 2
A pigtail harness adapter is Included
33-40, 160 Amps, 1 Alt, 3 Batt. w/ Excitation the positive output bolt wasPowerline Model 33 40 Battery Isolator (C. S. Type) 160 Amps, 5 total studs 1 Alternator 3 Batteries 1 Excitation Post (Needed for C. S. Series Alternators) Compatible with all Delco "CS" Series alternators with a 4 terminal regulator connector (P L S F) or (S F L P) A Delco or Delphi "CS" Alternator with only a 2 terminal regulator connector cannot be used with a battery isolator! (The 2 terminal alternator must communicate with the vehicle ECM and
