help installing tach

[67Fleet]

I've put my in-dash tach into my original cluster and now am confused on the wiring. It's an Autometer Sport-comp and it has 5 wires. A white and black coming from the 12v lighting, and then a red, black, and green wire from the main lead. Also, I have HEI and the top of the Delco Remy dizzy it has a little block that sticks out on the driver side and it says "tach bat" on the end of the little block but I don't see where I would connect a wire. Any help would be appreciated!!