Wonsquire

Robert, my sincere apologies, I am new on this forum, and, a bit challenged with this digital world. I just rec'd the weekly notice and found your note. Here is a link to the gentleman's article that guided my upgrades. https://mopar1973man.com/cummins/articles.html/24-valve-2nd-generation_50/51_engine/59_fuel/fuel-pressure-specification-for-bosch-vp44-injection-pump-r21/ I opted for the gauge rather than the light. I figured I was already doing the work and the gauge would be more informative. I did mount my gauge in the dash, there was a nice spot for it. I went with an Airdog Raptor 4-G aftermarket pump and made a bracket for it and the primary fuel filter just behind the fuel tank mounted to the frame rail. Pumps in general push better than they suck. I think you will find that your pump runs continuously when the engine is running. When you key on the pump runs long enough to pressurize the system, then logic shuts it down until the engine is cranked and running. Best of luck to you.

You may be better off tapping in with your fuel pressure sensor on the output side of the secondary fuel filter. You may have to add a "T", but, this will give you a better reading on what pressure is actually being delivered to the injection pump. I did mine 1 1/2 years ago. My best reading, if memory serves, was about 8 psi. Not too good so I added aftermarket pump just behind fuel tank, now runs between 12 and 16 psi. I have a couple of pics and other details if your interested.