I have a 2003 Ford F-150 XLT. My turn signals, hazard warning and tail lights do not work. I checked the fuse and it is okay. And I replaced the switch on the steering column. But it still does not work. Any suggestions?
I looked over your wiring diagrams. Just to be clear, are you saying that your turn signals, hazards, and tail lights (parking lights) do not work BUT your brake lights DO work?
Because that would rule out a bad Ground for the bulb sockets (at Ground Point G104) ((because the brake lights work)) and maybe it's time to inspect the wiring harness that runs along the bottom of the truck to the rear lights for damage.
However, if your tail lights work and it's your brake lights that don't work then check the Indicator Flasher Relay in Auxiliary Relay Box 4
