I Just installed a LIght on my truck, it works great. I picked up a 5 psi oil pressure sensor from Napa, a small bulb from Radio Shack and installed it in the upper corner of the gauge cluster housing. I wired it to the Lighter fuse as it is only on when the ignition is on. While I was at it and had the dash apart I also intalled one of the flashing Led's on the other side of the cluster wired up to battery power and the Oil sensor. Now when I shut the truck off the LED flashes just like I have an alarm, the other light only works when the ignition is on. Another benifit is that both lights come on when the Fuel pressure goes below 5 PSI, one flashing and the other steady. Lets see if I can miss that.
Hadley