so i'm looking for the data link for cummins insite. i think dodges before 2005 have a 3 pin deutsch connector somewhere in the front of the engine according to cummins quickserve website but it doesnt specify exactly where. the pins 02, 12, and 42 coming off the ecm are supposed to be the wires i need but i dont see them coming out of the wire loom anywhere. any ideas?

It hangs in the fuel filter area. Slightly below/behind the filter housing IIRC. Its a connector that isn't hooked to anything. Generally performance boxes like edge EZ and other comp boxes hook up to it for signals or boost fooling.