I need some help figuring out a fueling issue on my project. Converted a 2001 Excursion over to a 03 Common Rail Cummins. Using a Diesel Conversion Specialist harness that was built for the truck an air dog 165 pump and an MSD transmission controller. Have not been able to get it started. I have fuel pressure to the CP3 Pump from the air dog but cannot get the CP3 to send anything to the fuel rail. There is zero pressure coming from the CP3. I changed out the CP3 thinking it had a problem but still zero fuel coming out of the new pump. Any help Would be greatly appreciated as I am at the end of my patience at this point - lol.