I have a 2000 Ram 3500, I put a 2002 engine, pcm and wiring harness in the the truck. My dash is inop an reads NO BUS. Check engine lamp is on, and the tach is inop. Has any one run across this? Where can I find decent wiring diagrams?
I see this all so often. It a matter of crank / cam sensors and software of the ECM. Lot of time people think they can drop any 24V in you got to be careful of the cam and crank sensor and ECM software. I suggest you correct the hardware to match you orignal ECM so you can keep software and electronic correct.
