I installed it on my YJ. I bought a universal, cheap $99 one that works fine. Relitively easy to install. It can be divided into 3 parts: Wiring, vacuum hose connections, and the throtte cable.
Simply spice into the ign. wire, the VVS wire (or is it VSS? either way). Then run the wiring harness up into cab, and mount is accordingly.
Then tap into a vacuum hose. (I chose the PCV hose.
Then hook up to the throttle cable using one of the many different kinds of connections. Use common sense to chose the one that seems to make the most sense.
Currently: '14 JKU
Past vehicles: '92 YJ, '97 TJ, '10 JK