Outer Limits 4x4 Board

commin home from bush this sarvo. oil pressure light came on dimly then eventually bright. but pressure read around 4 if anything more then usual. pulled over switched off. checked oil okay on cold starts oil light not on. unplug oil pressure switch no gauge and light. reconnected gravy boat still there.

any idea's

faulty switch. get a mechanical pressure guage and test the oil pressure that way, if its all working there, switch/sender is on the way out

cheers cam.