Everything is working good now except headlights. The parking lights are on and brake lights work, everything on the car except headlights, there are no blown fuses and i cant find any plugs that are unhooked. Any ideas?
Not much. I remember that earlier Mustangs had trouble with the actual headlight switch, it would overheat and knock out the lights. You could start there.
Does flash to pass work (where you pull back on the turn signal stalk to do an autobahn pass)? Do both low and high beams come on when you do this? If so, check the headlight feed wire (goes from the hdlt switch to the multi function switch).
Also check the connections for this wire at each end. They can melt the hdlt switch connector or back out of the MF switch connector.