I found the ground near the starter and I spend an hour looking for the other one that you mention, I can't find it anywhere.
UPDATE: Installed a manual pressure gauge... I have 50 PSI at cold idle and it drops to 42 at hot idle. No matter how hard I pounded on the motor, I got no less that 20 psi in gear, at idle, and after an hours run.
A new twist, if I really put my foot in it the check washer light and check gauge lights still come on as previously mentioned, but as the RPMs get up there pretty high, it starts to miss. I'm convinced this is electrical of else I would just put an under dash oil pressure gauge on it and forget about it.