Apexi TT caused electriacl short???

Ok so first things first, I have decided that I am electronically un-inclined as far as understanding Japanese wiring diagrams. I ordered an Apexi turbo timer off of RRE.com and the wonderful people at RRE decided to include a Greddy wiring harness written completely in Japanese. So, I thought I understood the basics of how to install the harness and proceeded to install it on my 92' Plymouth Laser. I grounded one of the wires (black), connected another (red) to 12v constant, then I proceeded to connect another (green) to, what I thought was, the ignition switch in the steering column. That being said, I must have shorted something out because now, my car will not start. It will crank over, but it will not start. I checked the spark plugs, wires, and replaced them. The car started, ran for about 5 min. and then immediately shut off (this is after completely disconnecting the TT). If anyone any ideas or suggestions as to what may have gone wrong or may need replaced please reply, my car has been in the shop way too many times. Thanks, Tim