Xtool PS80 User Manual page 27

PS80 Diagnosis System
*Benz 300SEL 140 chassis: the OBD plug is on the left hand side of the engine bay,
use Benz-38 connector.
*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.
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