Hello, I'm starting my car for the first time (somewhat), and I noticed that the oil pressure gauge maxes out after a few seconds then continues to bottom out and the dummy light comes on. At that point I got scared and turned the car off. So this is about a 15 second span. I have hooked up the dummy light and the oil filter housing.

I have turned the car on a few times before this (twice) for about 1-2 minutes and at that time I was not looking at the gauges but looking for leaks.

What do you think would be the reason for this? Maybe the gauge or sender is not working correctly? Thanks for any help.