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Engine/Transmission (1998.5 - 2002) Does the Harbor Freight OBDII reader work?

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I've got an '01 conversion, and I'm currently trying to wire it up to use the OBD port. I keep getting an error message on the reader, so the first thing I want to deal with is whether or not the reader can actually scan the Cummins ECM?

Anyone have any luck on this?

And while I'm at it - in comparing OBDII pinouts with the diagram in the manual... . they don't seem to correlate fully. If anyone has a '01 2500, what pins are in your OBD port?
 
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