The power comes right off the battery through a fused link. The fuse is good. It is activated by the stock trigger wire through a dual relay system. I traded the fuel relay in the fuse box under the hood when I was having problems and it didn't change anything. The ground wire is also right off the battery connection so I am assuming that ground is good.
PS. Keep thinking out loud, I need all the ideas I can get.
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99 Quad Cab, 4wd, Comp Box W/Pump Wire & Boost Elbow installed, K&N Air Canon, MBRP exhaust, Twin PE 4200 High Pressure Fuel Pumps W/Fleetguard inline filter, Isspro EV Pyrometer, Boost Guage, Fuel Pressure Guage, DT Pro Fab Trac Bar, South Bend 13-1.25 Con O Clutch, Royal Purple Synthetics all around
374.2/846.7 at 30psi