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Hacking up Honda's ECU
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 Post subject: P75 ECU CN2 pin polarity
PostPosted: Tue Apr 11, 2006 10:27 pm 
What are the polarities of CN2 pins on the P75 OBD-1 ECU board.

I am trying to install Hodalog for datalogging and can't figure out which way the plug goes on the CN2.

Pin 1 - 4.

Pin 1: Ground?

or

Pin 4: Ground?


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