Since it's not easy to find the install instructions and I did things a little differently, I figured I'd put together an installation guide for those that would like one.

Main differences between mine and the one from Needswings, I'm grabbing power off the main Body Control Module ground (12ga wire) and I'm getting my RPM signal from the camshaft position sensor signal wire. My reasoning behind this was to get as clean of a signal as possible to the ZT-2. I also installed the ZT-2 box right into the passenger side relay/fuse/PCM/BCM box as well so minimize the length of wires between the ZT-2 and the car.