The schematic I sent is for a freightliner chassis so yours must not be on freightliner?
I know Dodge made their own ECM for the 5.9 in trucks, maybe youíve got that one. I think it only has 1 connector vs the 2 in the cummins / freightliner ECM.
I donít have a Dodge schematic on hand right now
1998 HR Endeavor Cummins ISB 275 / Banks Allison 3060
20014Jeep Wrangler JKUR with M&G air brake with breakaway