Adjustable voltage boost module for Square 4 pin Toyota
This product plugs in between the alternator and the alternator vehicle harness. The charging voltage can be adjusted anywhere from 14.0 to 15.8 volts by simply turning the small dial on the AVBM. This unit will work with OEM Toyota and MechMan alternators with 4 pin Square alternator plug. May not be compatible with other aftermarket alternators.