chevyjim· Premium Member
Discussion Starter · #1 ·
I bought a used tach cluster for my '70 without the circuit board and don't want to buy one until I can test the gauges. I know the gas gauge sender has a range of approx. 91 ohms but does anyone know the resistance range of the sender that the temp gauge works on? I also would like to know which terminals on back of the gauge go to +12, the ground, and to the green sender wire, for there are 4 of them and they don't appear to be marked.