This is a plug and play Flex Fuel and Alternator Holley Power Tap harness. The 4 Cavity alternator will function as it did in the factory vehicle. The 2 Pin alternator will function in default at about 13.5 volts or so. Choose your alternator type in the dropdown.
BP Automotive only uses OEM connectors designed for the application. The 2 Pin alternator connector is an OEM Bosch connector and not a cut-down Delphi connector.
The Flex Fuel harness will connect to a GM Flex Fuel Sensor. and the loose signal wire will be wired into an input on the input/output harness. We have the sensor available in the link below.