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if you ever get a good timing light with the advance function, you'll never want a basic one again, you set your base timing with the advance plugged and the dial on 0, then you hook up the advance, set the car at the specified rpm, and dial the advance on the timing light, it will show you exactly where the advance mark isQuote:
Originally Posted by firefighterwhite89
There are a couple different marks on the AT drive plate. There's the 15* mark indicated by the "15", but there is also a green dot. I assume that is the 4* mark. Can anyone confirm that?
Unfortunately, I cannot. Mine has a white hash mark at Zero, which is the setting to go for when both vacuum lines are disconnected and plugged. It also has a red mark at 15 degrees which is where it is supposed to be when the lines are reconnected. Of course, mine is not a California car and it was built in Ohio.
