HEI vs Sunpro tach install?????

[84 400]

Well guys i must confess i have not benn under the hood that much in the past 2 years except to change the oil and to polish the chrome. I forgot i had the HEI style dis. i thought it was a coil and dis set up not the HEI. Any ways were should i hook the green wire of my aftermarket tach to? i know some of yall have the same tach so maybe you can help. also i went with the 3 inch but have not desided were to mount. also please include were you made the wore connections in the fuse clock and to the dimmer switch. also an shots looking at the wheel from the side would help so i can see were you ran the wires.
Thanks