1992 Champion Europremier Oil Pressure Sensor Location?

Hi Everyone,

I hope someone here can help me out.

My 1992 Champion Europremier, with the 250HP Cummins 8.3, has a faulty oil pressure sensor.
I cannot find the thing to save my life.

I don't see it in any of the usual places:
Not near the oil filter head
Not on the engine body under the exhaust manifold
Not on the intake side near the pan lip
Not on the oil cooler

Does anyone have any idea where the oil pressure sensor might be hiding?

Thanks very much!

Dave
(roamingnerd)