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#1
03-19-2011, 02:08 PM
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Tach
On a 67 gto changing from standard gauges to rally guages how do you hook up the tach
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#2
03-19-2011, 02:31 PM
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On a '67, there shold be an insulated stud on the back of the tach, that goes to the -side of the ignition coil on a points ignition, TACH terminal on a HEI cap. The body metal of the tach should be grounded to the dash metal and the gauge metal to the dash metal.
George
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"...out to my ol'55, I pulled away slowly, feeling so holy, god knows i was feeling alive"....written by Tom Wait from the Eagles' Live From The Forum |
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#3
03-19-2011, 03:23 PM
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George I swiched it from points to the pertronix ignition system will this make a difference
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#4
03-19-2011, 08:35 PM
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If it's the Ignitor, should make no difference. Ignitor II, it should work, but check the calibration with a known good tachometer such as an aftermarket unit. Late model aftermarket units work by measuring signal transitions, the older OEM tach may be sensitive to the coil waveform and need recalibrating.
George
__________________
"...out to my ol'55, I pulled away slowly, feeling so holy, god knows i was feeling alive"....written by Tom Wait from the Eagles' Live From The Forum |
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