They do suck, but with the 04+ Ford used a new electronic communication system. I believe the system is CANBUS or CAMBUS. I forget. Regardless, it was almost a test line to see if they could integrate new features (for example, using the same radio in Expeditions, they had the overhead video screen run through the head unit). However, in making a part fit most vehicles, they used it in the Sport Trac, too. In doing so, they dropped out HU's AUX input for the CANBUS and thus, we have a nonfuctional AUX button and no way to get an iPod connected.