Author Topic: Tach wires?  (Read 663 times)

Offline RaptorF229

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Tach wires?
« on: October 09, 2007 - 11:47:26 PM »
I bought a console with a tach and since I'm new to this working on my own car stuff I don'know how the wires are setup. There are three wires black, red and green. I'm assuming red is positive black is ground and green goes to coil but which side?




Offline Bullitt-

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Re: Tach wires?
« Reply #1 on: October 09, 2007 - 11:59:57 PM »
from http://www.centuryperformance.com/mallory/wiring.asp

Red to 12-volt "switched" power supply
Black to ground
Green to trigger (negative side of coil, or tach output terminal if using an aftermarket ignition control)
White (or yellow) to light circuit
Wade  73 Rallye 340..'77 Millennium Falcon...13 R/T Classic   Huntsville, AL
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Offline 6packCuda

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Re: Tach wires?
« Reply #2 on: October 10, 2007 - 12:01:01 AM »
Yeah, you've got it right. The green should go to the negative side of the coil if you have stock ignition setup.
Dave

Offline 6packCuda

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Re: Tach wires?
« Reply #3 on: October 10, 2007 - 12:01:48 AM »
What he said. :2thumbs:
Dave

Offline RaptorF229

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Re: Tach wires?
« Reply #4 on: October 10, 2007 - 01:03:46 AM »
Thanks guys.