Tach Wire Help.

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Jul 19, 2005 | 11:10 AM

InSaNeKaMeL

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From: Detroit MI

Tach Wire Help.

I tapped into my tach wire for my N20 system that I am installing. But now I think I tapped into the wrong white wire. I have a digital multimeter. I don't wanna take the wheel off to get the the computer so I will just test my wire. So does anyone know what kind of readouts I should get with the multimeter (red in the wire and ground the black)? should I try volts? ohms? Thanks

-Steve-

Jul 19, 2005 | 01:33 PM

InSaNeKaMeL

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From: Detroit MI

anyone?

Jul 19, 2005 | 05:16 PM

3Vettes@Home

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From: Milton, West Virginia

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Quote:

Originally Posted by InSaNeKaMeL

Did you tap into wiring harness behind drivers side knee bolster? that's where I found the white wire, I don't know if it's safe to do this, but I did this on two cars without any problems. With the key inserted and to the "on" position, I used a test light and probed the 3 smaller white wires, one caused a "lamp" light to illuminate on the dash, when I probed the second one, the tach needle "pulsed" up to about 600rpm, indicating I had the correct wire. I was doing this for a "shift light install", both cars have worked well for many miles. Look up member "flyin'bryan" he has a link in his sig. that shows this harness.

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