CAUSES? High oil pressure

Oh geez your probably going to laugh at me but I'm going by the OE gauge that's on the car the water temp is he only gauge that doesn't work on it so that's the only gauge that I have flyer market .
That water gauge is reading normaly hat it always read which is 190ish not sure what type of gauge it is off the top of my head

Are any of the other gages reading high also? Then it could be the voltage limiter on the gages acting up.

Pick up an aftermarked mechanical oil pressure gage. It is more accurate.