*GM Buick: the OBD plug is below the dashboard, use SMART OBDII-16 connector.
*GM Buick GL8 : the OBD plug is below the dashboard, use SMART OBDII-16 connector.
*VW POLO: the OBD plug is below the dashboard, use SMART OBDII-16 connector.
*BMW 735I: the OBD plug is in the right hands side of the engine bay, use BMW-20
connector.