It functions by intercepting your programmer’s CAN high and low signals and passing them though the attached probes and 12+8 connectors. Depending on your plan of attack, you can tap the CAN wires directly in the STAR module, in the vehicle instrument cluster or at the wires which transport the information between the STAR module and the immobilizer. The OBD throughput will feed 12V back to your programmer to keep it charged if that feature is supported by your machine. Alternatively, the same outcome can be achieved by directly plugging the 12+8 connectors into the security gateway module of the vehicle.