360 oil presure

I'm sorry it is a magnum. The guage is the in dash electrical one. This is a 95 model truck and the mileage is around 150. I looked this morning and the guage was steady at idle. Everything on the truck is really clean including the engine compartment. The oil is new as is the filter. We were in a bad storm when I noticed it and I thought it was a connection or something.
thanks