Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Possible Tach Wire?

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Old Aug 9, 2019 | 09:04 AM
  #1  
ResIpsa's Avatar
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From: Northern Virginia
Car: 1987 Formula 350
Engine: TPI 383 Stroker
Transmission: T56
Axle/Gears: 3.27
Possible Tach Wire?

Can anyone help me identify this wire? I am not sure if it has anything to do with it but my tachometer has not worked since I purchased this car in May of this year.


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Old Aug 9, 2019 | 09:20 AM
  #2  
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From: North East GA
Car: 1989 Firebird
Engine: 5.7 LS1
Transmission: T56
Re: Possible Tach Wire?

what color is it its hard to tell for sure. The tach wire is white.

Look here for all the wiring diagrams
http://www.austinthirdgen.org/?pid=19
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Old Aug 9, 2019 | 10:15 AM
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Car: 1987 Formula 350
Engine: TPI 383 Stroker
Transmission: T56
Axle/Gears: 3.27
Re: Possible Tach Wire?

The wire is white. I like that answer!
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Old Aug 9, 2019 | 10:37 AM
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From: North East GA
Car: 1989 Firebird
Engine: 5.7 LS1
Transmission: T56
Re: Possible Tach Wire?

Originally Posted by ResIpsa
The wire is white. I like that answer!
There are two white wires at the coil/distributor wiring though one goes the the ecu and the other goes to the tach, if that wire runs to the c100 (bulkhead connector behind your brake booster) its the tach.
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Old Aug 9, 2019 | 02:01 PM
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ResIpsa's Avatar
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Car: 1987 Formula 350
Engine: TPI 383 Stroker
Transmission: T56
Axle/Gears: 3.27
Re: Possible Tach Wire?

I dug a little deeper and found this.


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