I got a 1994 4.0 fuelie engine and 2wd ax15 tranny out of an xj Cherokee. I'm putting it in my 1971 Javelin this weekend. Here is my problem. The harness under the hood is mostly stand alone, but there is a block that plugs into the body. This plug passes info to the gauges and supplies switching for the ignition and starter etc. I need to know what wires are what so I can wire it to the jav. I need to know what wires allow it to run, and start, and which one is the check engine light, the rest are not real important. The dealerships won't share although they can log in and see it. Thanks a ton. ~John