Hey, you guys were right!...(like I should ever doubt it). I pulled the dash and took a closer look and, by gosh, the oil gauge is mechanical! There are a couple screws on the back of the gauge I took for electricial terminals when I took a quick look at it the other day...(better get the old eyes checked again). So, now that I've figured out this highly technical aspect of my truck the next question is, what do I need to run an oil line to the gauge? What type of fittings and tubing should I use? Suggestions from the wiser (wiser then I, that is) stovebolters would be welcome. Thanks!