I read EVERY single post. I checked the fuses, everything was fine. I replaced the Multi Function Switch, I bought a new wiring harness for the lights and replaced the old one (the wire connections were loose). And still I don't have any rear brake lights, turn signals and neither do the hazards blink (in back). I checked the connections at the trailer hitch and under the truck by the spare. My husband is out of town and I am terrified to drive my 01' F150 without them working. I don't have anymore ideas and I have already missed one day of work. The head lights work, the blinkers in the front and the hazards in the front all work. Any other suggestions or ideas would be welcomed. Red has done me proud 318k miles and counting. I am at my wits end and beyond desperate at this point.