x9 500 2004 evo diagnostic socket location ?

[Leotech]

Where is the diagnostic port,   Im going to swap the regulator rectifier and then plug her in to a diagnostic.

[x9smoothie]

On my 2005 EVO I swapped my bad regulator (measured charging voltage) and engine light went away. In my case didn't not need DM port
This doesn't answer your question, but you can check the service manual to find your answer.

[Mr.Chips]

I think if you take off the panel in which the PICS sockets are mounted (just above the LH foot-board) you will find it.