Overview
SO669 series Jumper package details
1. The GODIAG GT108 Super OBDI-OBDII Universal Conversion Adapter is designed for:
Multi-brand auto repair technicians, motorcycle maintenance shops, heavy-duty truck garages, marine & engineering machinery repairers, ECU bench tuning specialists, and locksmiths who need to convert old non-standard OBDI ports to standard 16Pin OBDII for diagnosis, coding and ECU programming. It has A, B and C three configurations to match different maintenance scenarios.
2. Supported Key Functions & Features
GODIAG GT108 is a universal OBDI to OBDII conversion adapter designed to simplify the connection between older vehicle diagnostic interfaces and modern OBDII diagnostic equipment.
Main Functions
- Convert OBDI diagnostic interfaces into standard OBDII interfaces
- Connect vehicles with OBDII diagnostic scanners
- Support diagnostic data stream reading
- Support fault code diagnosis
- Support ECU programming equipment connection
- Support ECU activation and coding operations
- Support communication between vehicle ECU and diagnostic devices
Product Features
- DIY wiring design according to vehicle diagnostic interface definition
- Flexible connection for different OBDI pin configurations
- Reverse polarity protection to prevent damage caused by incorrect power connection
- Independent GND4 and GND5 grounding design
- Helps diagnose grounding problems of some control units
- Built-in simulated IGN switch function
- Power indicator light
- GND4/GND5 switching indicator
- IGN switching indicator
- Screw-lock terminal design for stable wiring
- Includes car diagnostic interface jumper kit
3. What Vehicles Does It Support?
GODIAG GT108 does not depend on a specific vehicle brand. It supports vehicles with different OBDI diagnostic interface definitions.
Supported Vehicle Types
- Cars
- SUVs
- Pickup trucks
- Motorcycles
- Individual ECU control units
Supported Configuration
A Configuration
Designed for:
- Cars
- SUVs
- Pickup trucks
- Motorcycles
Supported Communication
- CAN communication
- K-Line communication
Supported Applications
- Vehicle diagnostics
- ECU communication
- Data stream reading
- Fault code diagnosis
- Programming equipment connection
Vehicle compatibility depends on the diagnostic interface definition, communication protocol and connected diagnostic equipment.
4. Please Note the Following Limitations
- This is pure conversion hardware without independent diagnostic software; it must work with separate OBDII scanners/programmers;
- 24V heavy-duty trucks require an extra GT106 24V to 12V step-down adapter (sold separately);
- Users need to check vehicle pin definitions via service manuals or GT108 official manual; it cannot auto-identify port pinouts;
- Not applicable for new energy vehicle high-voltage ECU systems without dedicated high-voltage wiring accessories;
- Only provides communication conversion channel, cannot repair physical hardware damage of ECUs;
- The standard package only contains Config A car/motorcycle jumper kit; Config B and full Config C need separate selection.
5. Hardware Accessories & Licensing Requirements
- No activation code, serial authorization or annual subscription fees for the adapter hardware itself;
- Standard package includes Config A car & motorcycle jumper wires, battery clip power cord and wiring screwdriver; Config B truck wiring harness must be purchased separately if needed;
- Extra third-party OBD2 diagnostic/programming device is mandatory and not included in the package;
- No independent power adapter required; power can be supplied directly from vehicle battery via the included battery clip cable.
6. GODIAG GT108 Super OBDI-OBDII Universal Conversion Adapter Specification
- Output Interface: Standard 16Pin OBDII male port
- Functional Terminals: Independent GND4, GND5, physical analog IGN trigger switch
- Protection Circuit: Reverse power connection anti-burn circuit
- Indicator Lights: Power LED, GND status LED, IGN signal LED
- Matching Tools: Locking screwdriver, multi-color jumper wiring harness, battery clip power cable
- Applicable Voltage: 12V vehicle power supply (24V trucks need GT106 step-down adapter)
- Product Net Weight: 0.4KG
- Outer Package Dimension: 17cm × 11.7cm × 5.7cm
7. Software Update
- This is hardware-only converter without built-in firmware or vehicle database, no software upgrade operations needed;
- All diagnosis and programming functions depend on your matched external diagnostic tool’s own update service; GT108 does not charge any update fees;
- Hardware wiring logic is fixed permanently, no firmware upgrade packages released.
8. Global Version
Global universal unlocked hardware adapter without regional vehicle brand lock, compatible with OBDI ports of all vehicles and machinery worldwide.
9. Warranty
1-year limited hardware warranty starting from purchase date. Free replacement for manufacturing defects such as terminal loose contact and indicator failure. Damage caused by wrong wiring, overvoltage, artificial cable cutting and unauthorized disassembly is excluded from warranty. 30-day return & refund service available, buyer bears return shipping cost.
10. Package List
1pc x GODIAG GT108 Super OBDI-OBDII Universal Conversion Adapter
1pc x Car Diagnostic Interface Connection Jumper Kit
1pc x Power Cord with Battery Clips
1pc x Screwdriver
1pc x Manual
How to Use GT108?
Steps:
1. Find the definition of the diagnostic interface (find the maintenance manual of your own vehicle, or search online.), or see the definition diagram of the corresponding diagnostic interface of the GT108 manual.
2. According to the interface definition, find out the connection line needed by your car, and connect to the GT108 adapter according to the definition. (Use a screwdriver to lock the terminal.)
3. Connect the connected diagnostic cable to the vehicle OBD1 diagnostic interface according to the definition. (Connect GND 4 or GND5 first, and then connect BAT+. If the power cable is connected correctly, the POW light of the GT108 host will light up. If the vehicle diagnostic interface does not have power, please connect the car battery to the DC power connector of GT108 with the battery cable. If the vehicle needs the ignition signal, connect the O-IGN line, and press the IGN switch, the corresponding IGN light will light up, and the O-IGN line will output the ignition power signal.)
4. Connect the communication line CAN or K-line to the diagnostic interface. (Note: If it is the truck diagnostic software added by the car diagnostic equipment, you need to buy a GT106 24V to 12V adapter.)
5. Connect the diagnostic device to start diagnosing the vehicle.
Note: If you cannot find the definition for your own vehicle diagnostic interface, you can first find out the power supply of the diagnostic interface. First use the black battery clip on the battery connection cable to connect the negative pole of the battery, and then use the BAT+ line to connect to the diagnostic interface to find the power supply. You can also use a multimeter to find the diagnostic interface power supply. The definition of the diagnostic interface can also be judged by the GT101 Pirt Electric Circuit Tester device.