Any info on installing tach into cluster? '69 non ralley

[citadel]

Guys,

I have a non-ralley cluster 69 RR that didnt come from the factory with a tach. If I have Auto Instruments add a tach when they restore the cluster, how do I wire the tach into the car? Not sure if there is an extra plug for a tach in the factory harness if the car didnt have a tach originally....

 

[70rr-brian]

http://www.justdashes.com/ReplaceGauges.htm

These guys make non-rally tachs. On the main page 3rd tach down on the right side being case in point. As far as the who and where for's for your application, would have to see pictures. But wiring them is easy.

 

[hunt2elk]

A wire to the negative side of the coil, another to the fuse block, and the instrument light wire.