Hello,

I swapped into my 78 D100 a 2010 LX 5.7 hemi (6.4 manual trans cam) with a 2006 545RFE from a Ram. Using a 2011 Ram 5.7 PCM and a Hotwire Auto harness. Got it all wired up and I'm getting a no crank issue. Trans is in park and I'm depressing the brake (using the proper brake switch). Fuel pump primes and the throttle does its thing at key on, but no starter trigger. I verified that it is still getting power while the ignition switch is engaged. I first thought it was the SKIM, but sent that out to be removed, and still no crank. I can put 12v to the starter solenoid and it will crank. I can ground the start relay in the harness and it will crank.

Any ideas? I'm running out of things to check. I do have an HP Tuner available, FYI.

Thanks,
Greg