Thread: Adding Rally type or aftermarket wth tach guages wiring
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Old 07-18-2026, 04:50 PM
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Peter Serio Peter Serio is offline
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Default new harness for 65 GTO with Rally gauges:
The instructions for the adapter harness. This section of wires piggybacks alongside of the existing dash wiring in the car.

For 1965 Lemans & GTO this is how they decided to do the dash wiring; if the car was ordered from the factory with rally gauges.

Just FYI. Back then you could only get the tach & gauge package by having the car built with at the factory. No dealer installed gauges.
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