Missing oil pressure gauge. Possible it wasn’t an option?

[Fisherman302]

Hey guys the boat is a 2005 moomba mobius LSV. I bought the boat not too long ago and have been fixing some issues along the way thanks to your help. There is a blank gauge on the dash with no needle or numbers I’m assuming where the oil pressure gauge should be. I didn’t question it when I bought it since it was a blank gauge. Is this normal or did someone replace the gauge with a blank one? Was it an option for that year? I feel like oil pressure should be standard. Anyways here are a few pictures of the gauge and behind the console looks like there is a connector hanging there for the oil pressure I could be wrong? Check the pics and let me know what you think. I tried looking around in the motor for an like pressure sender but couldn’t locate anything that looked like it. Where can this be found?