This is probably a dumb question.
Question- I have a '66 C10 with a '74 I6 250. I'm in the middle of a rewire, using American Autowire #500560 Classic upgrade kit. I'm converting from my original dash cluster with idiot lights to an OEM cluster with gauges. My question is this, will I need to run an oil pressure line in order to get that gauge to work, or will it work electronically?
