Red = 12 volt power (pin 16 of OBD2 harness for constant power/ can also be run to switched power source)

Black = Ground

Gray = CAN-high (pin 6 of OBD2 harness)

Orange = CAN-low (pin 14 of OBD2 harness)

4 pin connector on other end of harness plugs directly into P3 V3 main harness in place of V3 OBD2 harness.

*ONLY COMPATIBLE WITH V3 OBD2 GAUGE