Almost finished with my78 Z/LS1 swap. The only thing left is hooking up the tach. I sent it off and had it recalibrated and now ready to hook up the white wire from the new computer to the old tach. My only problem is that I can't find a schematic that shows the color of the old signal wire on the tach so I can replace it with the new signal wire(white). I believe there's about 8 wires going to the tach, so if anyone knows what color the old signal wire is, I would really appreciate you letting me know. I found an article online describing two green wires coming off the coil but I'm not sure it's for my year car. Please help!