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Discussion Starter #1 (Edited)
I am purchasing a 69 mustang and it has had a tach previously. It doesn't come with the instrument cluster so im using a instrument cluster from a 69 without a tach. Is it possible to just plug in the connecter ad speedo cable and e good or do I need to change the whole underdash wiring harness?
 

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Hello. :) The two wires in the underdash harness that are supposed to be plugged into the tach will have to be plugged into each other or the car won't start. Plus, whatever it is that occupies the place where the tach goes won't have the printed circuit supplying power to it. Other than that, I think that you are ok. :)
 
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