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Grey wire on the coil????????

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Old 06-26-2019, 09:25 PM
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Car: 92 Camaro Z28
Engine: 305 TPI
Transmission: T5
Grey wire on the coil????????
Does the grey (tach) wire go from the coil through the computer to the tach or is it in straight correlation from the coil to the tach??
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Old 06-26-2019, 09:45 PM
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Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Grey wire on the coil????????
Should be a white colored wire at the coil, I suppose it might have changed over the years if yours is grey.
it goes directly to c100 to the tach. The ecm gets a tach signal from the icm.
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Old 06-26-2019, 10:13 PM
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Car: 92 Camaro Z28
Engine: 305 TPI
Transmission: T5
Re: Grey wire on the coil????????
Okay kinda what I figured, Thank you. Guess it's back to the drawing board. 🤨
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