Sorry guys, i don't know how to move this to the cummins section

96 ram 5.9 cummins, no oil pressure after power steering pump replacement

Good afternoon all, great forum......my problem....I replaced my power steering pump today and in doing so I had to disconnect two electrical plugs just on top of the pump, and I had to remove a plug (bolt).I don't know what the plug serviced, but when i removed the plug about a quart of oil came out of it.I replaced everything and now my gauge says I have no oil pressure, my question is where is the oil sending unit and does anyone know what that plug was..the plug is just to the rear of the pump(not on the pump)

ant suggestions would help

Thanks in advance
Gord