Ford Cortina - goes like a chinese sweat shop, flat out and no breaks

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Author Topic: mk2 GT tacho  (Read 1488 times)

gazzac

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mk2 GT tacho
« on: December 30, 2008, 08:53:00 PM »
Hello can someone tell me how to wire a gt tacho into my mk2 cortina,I have got a full set of gauges for a gt and I have wired all the gauges in the dashpad but dont kow how to wire the tacho up I have the earth worked out that was easy as it is the black wire but I have 3 white wires and dont know where they go. Please help cheers Gary
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Bucster

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mk2 GT tacho
« Reply #1 on: January 05, 2009, 09:28:05 PM »
Hi Gazzac,
Most tachos are usually wired the same way.
1 - earth which you found ok,
1 + positive usually red, dunno about them all being white, that sorta sux.
1 interior light wire, sometimes orange
1 tacho active, sometimes green, this wire runs from the - negative terminal on the coil and sends the pulse to the tacho to generate rpm.

So if you can narrow it down with your 3 white wires, 1 will turn the light on within the tacho, the other needs 12 volts when the ignition is on and the last one picks the signal from the coil.

Sorry buts its the best i can do at the moment to help.

Bucster
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