Racepak This cable allows you connect your Vantage CL1 data box to the OBDII port on your 2008- or later model vehicle. One end features an M8 connector while the other end has a standard OBDII connector to allow easy connection for power and vital vehicle information. Note: When using the OBDII connection with the Vantage CL1, it is recommended that the batteries be removed from the CL1 data box, as damage may occur to the unit.