1988 CRX w/K20z3 & Kpro - Fuel Pump Not Priming

[rallyrcr]

Could use some help from the community for a fuel pump issue with my CRX. I have searched and have exhausted all the online resources for self diagnosing my fuel pump issue on my own. What I have been able to do on my own is that I believe I have narrowed down the problem to a wiring issue. Some timely help would be appreciated as I'm trying to ready the car for an SCCA event in a couple weeks.

PROBLEM
Known healthy CRX with k20 swap no longer primes fuel pump as of a few days ago. No mechanical issues or breakdown on vehicle for last few years. The engine will turn over, but no fuel pressure is registered on fuel pressure gauge.

TESTED SO FAR
Main relay - existing relay tested good, but also replaced with brand new relay for good measure (which also tested good)
Fuel pump - tested good with 12 power source directly connected to the fuel pump. Pump primes and fuel pressure visible on fuel pressure guage.
Battery - brand new, left on Ctek trickle charger to ensure charge
Kpro - am able to connect to and log in to Kpro. I can also see the Kpro working as it logs and I see various inputs like pressing on my throttle, and temp changes
Fuses - checked dash and main fuse boxes. all good.
Wiring - casual visual inspection shows no visible frays, or burned out wires. Need information on how to test further.

QUESTIONS
My questions center around what the proper electrical path is between the car, Kpro and then the fuel pump. I have the wiring diagram that Honda provides, but that only shows which pins connect to the Kpro. What I don't know is where the connections go from there. I do have the CRX wiring diagram, but it does now show anything regarding the connections to the RSX harness. It could be grounding issue, but I also need to find out how many and where those ground straps are.

Any help from the community would be kindly appreciated.



Vehicle specs:
1988 Honda CRX HF
Honda K20Z3 (dynapack 232whp ~270bhp estimated)
Stock Internals except for Skunk2 Drop-In-Cams
Kpro PNF-A04
3in cold air intake
Skunk2 70mm Throttle
Skunk2 Intake Manifold
Skunk2 Megapower Header
2.5in exhaust pipe
Magnaflow N1 muffler
RC Engineering 440 Injectors
Walbro 255lph Fuel pump
OEM NGK Iridium Plugs
OEM coil packs
BDL fuel Rail
AEM fuel pressure regulator
Saldana Racina oversize racing radiator