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Original Message
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| RE: Tachometer connection |
| By Will - 06/05/2001 8:17:46 PM; IP 204.50.76.101 |
I have a 67 Mustang Standard wiring harnass with a 67 Tach dash. The tach works off of the signal to the positive side of the coil. The voltage goes through the tach to the coil.
My tach works fine with points + stock coil or stock dist with Pertronix and Pertronix coil. It worked with a Mallory Unilite (elect ignition) dist with the stock coil, but it didn't work with a Mallory ignition box. That's because the CD boxes get their power directly from the battery/alternator, so there's no signal in the hot wires under the dash.
Oh yeah, I originally got a used wiring harnass for the tach dash, but the connections were all crappy so I bought a new harnass - only they don't make 'em for tach cars. I found the hot wire (it's the one with the long resistor wire I think), and I spliced two connectors into it. It's not too hard to find in the wiring diagram. Worked like a charm. |
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