Join Date: Dec 2002
Location: Saint Louis, Missouri
The tach may be the easiest to wire out of both. The speedometer however was probably wired to a VSS (Vehicle Speed Sensor) wire off of the newer style transmission.
I don't know what type or how much of a signal is required but on my older Dakota Digital gauges it came with an adaptor to convert the mechanical speedometer cable over to an electrical signal for their gauge system. Someone may make a direct fit adaptor for what you are wanting to do.
As far as the plugs on the back, try and get them off of a donor car so it's easier to wire or change out later if needed.
1974 Spirit Of America Nova (being restored), 1973 Nova Custom, 1968 Chevy II (Garage Find 2012)
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