The package has three type of adaptors:

• OBD II 16 adaptor, on main cable 
• Diesel 6 Pin;
• Diesel 9 Pin

OBD II 16 covering:

• UD, Hino, Isuzu, Fuso are using OBD 16.
• Hino or UD might have Diesel 9 adaptor, this is only for Tranmission or ABS
• car or pickup OBD II
• Volvo/Mack 2013 and newer

Diesel 6 pin

• Diesel OBD, older than 2000

Diesel 9 pin

• Diesel OBD, most HD truck or equipment