Adjustable voltage boost module for GM 4 pin oval plug
This product plugs in between the alternator and the alternator vehicle harness. This unit will work with OEM GM and MechMan alternators with 4 pin oval alternator plug. May not be compatible with other aftermarket alternators.
Adjustment range on hairpin style alternators: 14.9 - 15.8 volts
Adjustment range on standard AD/CS GM alternators: 14.9 - 19.0 volts