2010 prostar with cummins truck cranks, wont start elect. fault

hi all, i have a 2010 prostar with cummins isx. ive searched every thread and tried almost everything. going down the road i was getting transmission faults, speedo going crazy. i was able to limp slowly stuck on second gear to a truckstop. now the truck cranks but it wont start. insite does not connect to pull the codes but was able to get codes from DLB. could a bad ignition switch cause this? ecm? i connected a power probe at pin 39 on oem connector. but not sure if thats the way to check it. to load test pin 39 with a bulb, do i put one end on the pin and the other on any ground? thanks guys

 

thanks Heavyd i will try that