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Question Regarding Fords with Factory Tachometers

There's a lot of Ford fanatics here. I'm trying to help a guy wire a Duraspark ignition into a Mustang. Something I've done many times in the past. But my memory is getting worse.

I'm referring back to the ignition wiring for late 1960s and early 1970s Fords equipped with the factory tachometer.

There was a pink wire downstream of the ignition switch, which was the ballast resistance for the ignition circuit. Factory tachometers were wired in series with the ignition circuit too. What I can't remember is where the pink wire was placed when there was a factory tachometer. Was it before the tachometer or downstream of the tachometer?

Anybody have the answer?
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