Where do I splice this one in to get a tach signal?

Thanks.

 

i had a post on this last week.
https://mustangforums.com/m_2897415/tm.htm

ask zw99gt to find out were it goes. Also not 100% positive but i think if u get a tach adapter ( i have a shift light) you can use that
but i have not finished my install yet, bc of that damn tach signal which i alsostill not clear were it goes

 

I ended up called Zex tech support. You can hook it up to any coil. Each coil has a red wire and another wire. Hook it up to the other wire. I hooked it up to coil 2, green wire/white stripe. I'm not done with mine yet either, I've got the wiring in the car to do tomorrow. Then we'll see if it all works.