Check the plug-in for the trailer lights, if it has one. If not, check the Headlight switch. It probably has a burnt wire.
Most likely turn signal flasher
A short in the wiring (grounding out)
Short in the wiring or inside one of the plugs.
you could have a short between the two.
Either your battery is dead, or your alternator has failed.
It's probably your brake lights, not your brakes.
First thing you want to check is the dimmer switch to see if it is turned all the way down.
not usually!!if fuse is blowing out check for short!!
bulbs or bulb sockets
what would cause the ADVTRAC OFF light to remain on on my 2005 ford explorer