Where is the Tach wire?

Hi all, Maybe you have read the other post, I will be installing a remote start unit in a 1995 GMC Jimmy SLT, and I think I can find all the wires I need except for the tach wire. I know it should be somewhere close to the ignition module. Any ideas on where it might be, and what color it is? Thank you.

White wire at the coil.

the only white wire? Is there more than one? Is it bad to tap into this wire? Is it solid white or have a stripe through it? Thankyou.

the only white wire? Is there more than one? Is it bad to tap into this wire? Is it solid white or have a stripe through it? Thankyou.

It should be the only white wire at the coil

thankyou