2003 Ford F150 SuperCew - This just started happening. After I start my truck, none of the electical compenents work. On the dashboard, the only two items that lightup are the left/right signal and the highbeam signal.These signals are constantlyon and do not go away. The headlights, cruise controland radio are about the only things that work. I can't use my turn signals, air, dome lights, power lock and windows, When I try to turn anythingon, I hear a buzzing sound. The truck starts upand runs great. Any ideas?

 

Sounds like a major short somewhere.

 

CK ALL RELAYS UNDER HOOD WHERE FUSE BOX IS

 

I checked all relays and fuse. All looked good. When trying to figure out where the buzzing sound came from, everthing suddenly worked. Thereappears to be a short somewhere between the driver and passenger on the floor.

 

IF U HAVE POWER SEATS OR LUMBAR THAE COULD BE WHERE SHORT IS MINE HAS POWER LUMBAR AND IT SHORTED OUT ON WIREING HARNESS UNDER CARPET SO I HAD TO PULL OT SEATS AND PULL OUT WIREING HARNESS AND REPAIR SHORT NY RADIO WOULDN'T WORK SPEEDODMETER WOULDN'T WORK DOME LIGHT WOULDN'T WORK BUT MINE IS A 94 F-350 CREW CAB