where is the oil sensor/switch

I will mention again....I know nothing, but everyone has to learn sometime.

1999 ram sport 1500
5.2L 318
95,000 miles

Is the oil sensor/switch the same as the Oil pump sending unit?
Where can I find this in my truck? Im having a difficult time locating it. Im replacing them all including the pump. I have a manual for a 2001 dodge, that I got from this site, well a link was posted, but I think that the years are about the same. I could not find a listing for a oil switch in the 5.2 or 5.9 section. The only one they had was for the 3.9.

Also, If the rod from the distributor was to wear down, what would happen?

it's right next to the distributor. If you oil pump drive gear wears down you may have a intermittent misfire, and a flickering oil pressure light, if it fails you will lose oil pressure.

This guy said in his other post that he could hear ticking when the oil pressure gauge dropped, so I think the guage isn't the problem.

Anyways, when you pull the pan to replace the pump like you say you're going to, have a look at the crank. My mains had turned blue from heat. The motor still ran, but it was all done. Oil was full of fines from the bearings.

I heard my lifters plain as day when I had the truck running in the driveway the day after, with the pressure gauge sitting at zero, and I knew it was all over.