The Brake Lights And Blinkers On My 2000 F-150 Do Not Work. All Fuses And Bulbs Are New. The Third Brake Light Does Work. When I Put On The Emergency Flashers, Only Two Lights Flash. The Passenger Front And The Driver Rear.absolutley Nothing Happens When The Turn Signals Are Turned On. ???????????????

 

Multifunction switch is likely bad. Make sure the 4 way flasher switch is locked in the down position. Sometimes the flasher switch portion is the bad part and peeps accidently pop the switch on and then you have no flashers or brake lamps at all. Sometimes the whole switch is bad. Sometimes the wiring pigtail connector breaks at the back of the switch causing pins to pull out.

By the way this is the All New 2004 F150 forum. You will get better tech support in the 97-2003 F150 forum