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Rectangular black diagnostic adapter with multiple cable ports and screw terminals, 9.06 by 4.33 by 1.57 inches

GODIAG

GODIAG GT108 C Configuration OBDI-OBDII Conversion Adapter measurement tool

SKU CH-XSTS-7RS5V MPN GT108

Converts legacy OBD-I vehicle ports to standard OBD-II for diagnostics on cars, trucks, motorcycles, boats and industrial equipment

  • Size/DimensionsInch: 9.06*4.33*1.57
  • TypeCode Scanners & Accessories
  • FeaturesGODIAG GT108 C Configuration Super OBDI-OBDII universal conv
  • Wide vehicle coverage supports cars, SUVs, trucks, motorcycles, tractors, mining vehicles, generators and boats
  • DIY wiring lets technicians build custom OBDII cables for any diagnostic interface definition
  • Reverse polarity protection prevents damage to the adapter and connected diagnostic programmer
  • Independent GND4 and GND5 pins help identify poor grounding on control units
  • Supplied locking screwdrivers and cables enable secure, custom wire termination

OBDI-to-OBDII universal adapter

The GODIAG GT108 C Configuration converts legacy OBDI diagnostic ports on cars, trucks, tractors, generators, boats and motorcycles into a standard OBDII interface. It is built for technicians who need to connect modern scan tools to older vehicle fleets. The C configuration combines both A and B wiring sets for the widest vehicle coverage.

DIY wiring kit with protection

Supplied cables, ECU leads and a locking screwdriver let the user assemble pin-outs that match each manufacturer's unique OBDI layout. Reverse-polarity protection prevents damage to the scan tool if power is hooked up backwards. Independent GND4 and GND5 terminals help isolate grounding faults on sensitive control units.

9.06 × 4.33 × 1.57 inch housing

The adapter measures 9.06 by 4.33 by 1.57 inches, a compact footprint that fits in tight engine-bay spaces and tool bags. Buyers who need a fixed, pre-pinned cable for a single vehicle model should choose a dedicated harness instead.

Highlights

  • Wide vehicle coverage supports cars, SUVs, trucks, motorcycles, tractors, mining vehicles, generators and boats
  • DIY wiring lets technicians build custom OBDII cables for any diagnostic interface definition
  • Reverse polarity protection prevents damage to the adapter and connected diagnostic programmer
  • Independent GND4 and GND5 pins help identify poor grounding on control units
  • Supplied locking screwdrivers and cables enable secure, custom wire termination

Specifications

BrandGODIAG
ModelGT108
Size/DimensionsInch: 9.06*4.33*1.57
TypeCode Scanners & Accessories
FeaturesGODIAG GT108 C Configuration Super OBDI-OBDII universal conversion adapter can convert the OBDI diagnostic interface of cars, trucks, tractors, mining vehicles, generators, boats, motorcycles, individual ECU control units, etc. into standard OBDII diagnostic interfaces through DIY wiring Interface, convenient for car maintenance personnel to connect to OBDII diagnostic programming equipment for data streams reading, fault codes diagnosis, programming, activation and coding...

Questions about this item

Will the DIY wiring terminals on the GT108 need periodic re‑tightening after repeated vehicle connections?

The adapter uses locking screw terminals for each pin; they stay secure unless physically loosened, so no scheduled re‑tightening is required.

What is the first limitation when the GT108 runs continuously while powered from a vehicle diagnostic port?

The unit draws power directly from the vehicle’s OBDI/OBDII port, so its continuous operation is limited only by the vehicle’s own battery and charging system capacity.

Does the GT108 generate noticeable heat or electrical noise during all‑day diagnostic sessions?

It contains no active electronics — only passive wiring and reverse‑polarity protection — so it produces no measurable heat or electrical noise during extended use.

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