Hi there, I have a '77 Midget, on which I had to replace my dual gauge. The oil pressure line attaches to a fitting at the base of the distributor pedestal, and the temperature probe fits in the thermostat housing. By the way, in case you don't already know, the line connecting the temperature probe is a capillary tube, not a wire, so don't ever cut it because it's very expensive to repair. Hint: The P.O. broke the one on my old dual gauge.