[1972BlueC20]

Hi guys,

I need some confirmation on how to hook up the tachometer on my new reproduction cluster I just got in the mail today.

I already know (thanks to TBONE1964, VetteVet and ray_mcavoy) how to change the positions of the wires in the cluster plug to convert from idiot lights to gauges, and I know about running new wires from the # 1 (to alternator) and the # 12 (to the junction block) with 4 amp inline fuses on both of these new wires.

The only thing that is stumping me at this point are exactly how to hook up the tach, I just want to verify one last time before I do all this that what I have read and been told is correct and that I understood it correctly from those who were so kind to help me!

Here are pics of my new cluster (front and back) and a pic that I drew lines onto of how I think I can run the wires for the tach since I have HEI....also a picture of the tach harness that came with the cluster. I don't think I need this harness since it appears to be for a points style distributor and I have HEI.

I also have a tach filter, some say I should use it, others say I don't need it....if I do use it, how would it be wired into this equation? I read the instructions but I'm still not 100% sure how to hook it up.

Lastly, does the tach have it's own light inside or does the 2 lights on either side of the tach illuminate the tach itself??