just bought the top o the lline one from Cambodian Tire because it also has a Tach which I don't have in the car now I can't figure out how to check for my current total all in ,do I still set the light for the # I want and turn the dizzy till the mark lines up at zero like my old light or what , a little help here eh oldkimmer.darn it I should have bought the static light for 100 bucks less and got a cheap tach to go with it .