Thanks for your help MisFit. I found a lot of info on Ford radios, but nothing on the model that was in my Expedition. With a volt meter and some trial and error, I think I have figured out most of the connections (lights, reverse, speakers, power, etc.) on the back of the radio.
A few more questions if you don't mind... If I don't have a rear view camera, do I need to hook up the reverse wire... or can I disable the rear camera switching? The subwoofer connects to the radio with a single connector containing four wires. I am assuming that two would be power and ground -- th