Does the light go out with the key on and unplugged from the sending unit. check for a short first. -------------- Original message -------------- From: ATX BUS <atx_bus@xxxxxxxxx> I need some suggestions for chasing a potential oil pressure issue. Over the weekend when I started my bus I noticed the oil pressure light did not go off. I verified that there was enough oil, restarted and the same thing happened. So I replaced the oil pressure switch and the light remains on. Any helpful suggestions on trouble shooting this situation are appreciated. Jeff