most def looks like an electrical issue, check your grounds etc and make sure they are all connected and secure

 

find a wiring diagram that supports the oil pressure sensor. check to see if they have a common ground.

 

Well all grounds are good, battery checks out with volt meter as well. I'm down to the 4 month old alternator. I know it will most likely test good too. I just think it can't handle spinning at 8k and starts giving out. Going to try a denso maybe.