ProForm Shift-Light Installation
 

Their instructions suck.,

All it says for the LT1:

GM Cars & Trucks
LT1 Engines : Connect the green wire to white or white with black stripe wire coming off the 32-pin connector (beneath the aircleaner) or coming off the ignition control module (ICM) coil pack.

I have no idea what their talking about so I cant install my shift-light.

Any ever install one?

They seem straightfoward....
Find the white or white with black stripe off of the 32 Pin connector (under the aircleaners) or off the ICM coil. Then just run the green wire through the firewall and splice in to it.

unbolt the PCM and look for white wire #13 on the RED connector

White wire off the coil is the tach, I think works too, but thats a further run from the firewall then the PCM is