you`ll have to add a diag connector I can just about bet on that unless they did when they hacked the harness, It will have the CAN bus connector on it but thats only usable as a diag aid with the cummins diagnostic software.
The 2 idle validation switches have a common feed, hence 3 wires...
Check the attachment
I`ll PM ya all the stuff you need to do to put a j1962 connector on it
