Data Link Connector: Locations

*** THIS ARTICLE INCLUDES UPDATES MADE BY TSB #93-2-4, DATED JANUARY 1993, AND TSB #90-6B-25, DATED MARCH 1990 ***







The location of the Self Test connectors are at the Left Rear Corner of the Engine compartment.





The Self Test Output (STO) connector C125 is a 6-pin connector, with White/Green, Red/Black, and White/Yellow wires.
The Self Test Input (STI) connector C135 is Black, with a Red/White wire.
The Tachometer connector C147 is White, with a Yellow/Blue wire.