00Sebby
Senior Member
I'm kind of laughing at the term "manual gauges". Modern gauges are digital... coming from computer/CAN bus lines, etc. Old gauges were analog. Voltmeters and ammeters were electronic because they could actually measure voltage or amps. Coolant temp gauges were also electronic and usually driven by a temp sending unit. The oil pressure gauge was about the only thing where the actual thing being measured (oil pressure) reached the gauge. As others stated, that was usually a small tube coming from the block to the gauge. My '69 Z/28 had all those gauges mounted in the console in front of the shifter. The oil pressure tube leaked all the time and messed up two carpet sets. If I had another '69 Z/28, I would be all over making sure the analog gauges worked. But modern digital gauges (the real ones, not the fake ones like in Miatas, etc.) are so much better in every way.