1997 Ford F-250 Possible Short

The other day, I started my truck, which was in my front yard. She fired right up, even though it had'nt been started in about 2 weeks. I pulled the truck into the driveway so I could be closer to my toolbox. No problems. I changed out the antenna for the stereo, as the old one had broken off. The old wire was in there really tight, I gave it tug, but not that hard. It would'nt come out, so I left it in place, and installed the new one. Now, engine turns and turns, but she will not start. (5 gal. Gas in tank). What color wires should I be looking for in case I might have pulled one loose by mistake? Please help, as this is my only means of personal transportation.