Installed a cd player is really easy, however, it seems as if your wiring harness was faulty. There should be two parts to the wiring harness, one that handles the speakers only (8 wires, positive and negative for the four speakers) and one that is for ground, power, switched power, power antenna and remote turn on lead. I assume that you do not have any subs since you are installing just a headunit right now, and I do not think the Sport had a power antenna. Anyway, once you have the proper harness wired up, installing the deck is very easy, and you do not have to worry about the mismatched ford color codes. If you need instructions on getting the unit in,
click here for some good instructions.