112k, low oil pressure light and ding comes on and stays on entire time running,

You can put in a new oil pressure sending unit, for starters. Then run the engine to see if that was the problem. You could also buy a tube type oil pressure gauge and that would give an exact measurement of the engine oil pressure.

Have someone check your oil pressure with a mechanical gauge. It could just be a sensor, or could actually be lack of oil pressure and destroy your engine. I would advise not taking that gamble and get it checked out.

i agree with andrew needs to be checked with a mechanical guage to see if pressure is within spec first that will tell u if it is a faulty sender wiring, or oil pump

is there any oil in it?

YES. HAD 25% AND i ADDED 2 QTS.