Compatibility:This Resistor Wire Pigtail Converts 12v to Signal,Compatible with 1999 and newer GM LS series engines with 4-terminal, flat alternator connector
This part reduces the voltage through a resisto, enabling alternator operation without dedicated alternator control
When the ECM is not in use, the in-line resistor steps down the 12-volt supply to the correct alternator "on" signal voltage
quality materials: Manufactured from high-quality, rigorously tested before leaving the factory to ensure perfect performance and reliability
This product includes: 1 96 inch lead with 4 pin plug tail fiber