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Old 05-08-2021, 12:33 AM   #3
billr
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Join Date: Jul 2013
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Default Re: 1998 sc2 tach issues still

Maybe I'm reading the Autometer info wrong, but I don't think the above is correct. I think the 9117 goes in series with one of the ignition wires, after it the wire is cut.

What does Autometer say about all this? Do they understand that you are trying to connect to a Saturn wasted-spark system? If they cannot figure out why it won't work, I would abandon Autometer and start over. Trying to "finish the engineering" for a flaky vendor is not often a practical effort.

However, I suppose I should ask: what does it do now, no tach action at all, or still wrong reading? How, exactly, do you have the wires to the 9117 connected to the car?
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