Thanks for the info guys.

Let me see if I got this right. I can build the led/sw tool. No problem.

Kestas, I'm not sure about codes listed in your link. I have the 16 pin conector and no built in reader (1995 W124 E320)

I understand I must conect ground on pin 1, 12V on pin 16 and...

Emissions codes: which pin? Number 3?
ECU on pin 8
CC/ETA on pin 14

And what about other pins? Code listing for pin 3 and others?

Thanks again.

Juan

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Juan
1995 E320 Sedan
2008 Ford Escape
RC Helicopter