Does anyone know how to do diagnostic testing on an 1999 Alfa Romeo with a 3 pin...

Greame

New member
...connector? I have heard you can get an adapter to turn the three pin to a standard 9 pin OBD II but what equipment will I need other than that, will a handheld tester do the job or do I need special software for my laptop. Its a 1.6TS with the plastic top engine.
 
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