My 87 Camaro SC didn't come with a Factory Tach. There is a white wire that comes off the coil and goes to the distributor. Is that the one I need to tap into for the tach signal? Car is a 305 5spd with the CC quadrajet.

Thanks!

Here's of pic of the coil and the white wire next to what looks like a pink wire.

 

Got it! Used the white wire and the new tach works awesome!