THINKCAR ThinkDiag 2 OBD1 Adapter Main Cable
The ThinkDiag 2 OBD1 Adapter Cable is a connection cable designed for using a compatible THINKCAR or ThinkDiag diagnostic interface with supported older vehicles equipped with manufacturer-specific diagnostic connectors.
One end provides a standard OBD2 16-pin female socket for connecting the compatible diagnostic dongle. The other end uses a DB15 connector for attaching supported OBD1 and old-vehicle adapter cables.
This cable is an intermediate connection accessory. It does not directly fit every OBD1 vehicle without the correct vehicle-specific adapter.
Main Features
• Designed for compatible THINKCAR and ThinkDiag diagnostic interfaces
• OBD2 16-pin female connector for the diagnostic dongle
• DB15 connector for supported old-car adapters
• Enables connection to selected non-standard diagnostic sockets
• Suitable for compatible OBD1 adapter kits
• Durable molded connector housings
• Flexible automotive diagnostic cable
• Secure DB15 connector with fixing screws
• Compact and convenient workshop accessory
• Useful as a replacement for a lost or damaged main adapter cable
How It Works
The cable is installed between the diagnostic interface and the required vehicle-specific adapter:
- Insert the compatible ThinkDiag diagnostic dongle into the cable’s OBD2 female socket.
- Connect the DB15 end to the appropriate vehicle-specific OBD1 adapter.
- Connect the vehicle-specific adapter to the car’s diagnostic port.
- Provide external power when required by the vehicle or adapter.
- Open the compatible diagnostic application and select the correct vehicle.
Additional power may be required because some older diagnostic connectors do not supply voltage to the scanner.
Compatible Adapter Types
Depending on the adapter kit and scanner support, the cable may be used with selected connectors for older vehicles from manufacturers such as:
• BMW
• Mercedes-Benz
• Toyota
• Nissan
• Mitsubishi
• Honda
• Mazda
• Kia
• Hyundai
• Fiat
• Opel
• PSA vehicles
• Other supported manufacturers
Vehicle coverage depends on the diagnostic interface, application subscription, software version, DB15 pinout and selected vehicle-specific adapter.
Important Compatibility Information
This is not a universal OBD1 converter and does not add unsupported vehicle coverage to the diagnostic scanner.
Before purchasing, compare:
• The diagnostic interface model
• The OBD2 female connector shape
• The DB15 connector and pin arrangement
• The required vehicle-specific adapter
• The adapter kit’s wiring and pinout
• Software coverage for the intended vehicle
DB15 connectors with a similar external shape may use different internal wiring. Do not connect this cable to an adapter kit unless its compatibility and pinout have been confirmed.
Important Power Notice
Some older vehicles do not supply power through the manufacturer-specific diagnostic connector. In these cases, an external 12V power connection may be required through the appropriate adapter.
Always verify polarity before applying power. Incorrect voltage or reversed polarity can damage the scanner, cable or vehicle control unit.
What This Cable Does Not Include
• ThinkDiag or THINKCAR diagnostic scanner
• Diagnostic software or subscription
• Manufacturer-specific OBD1 adapters
• External power cable
• OBD1 vehicle coverage by itself
Package Includes
• 1 × ThinkDiag 2 OBD1 main adapter cable
• OBD2 16-pin female connector
• DB15 connector
Scanner, software and vehicle-specific adapters are not included unless specifically shown in the selected product package.











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