I strongly suggest your first priority will be to discover why your tail lights are seemingly consuming many times more current than they should. A 30 amp fuse has less resistance than a 10 amp though the difference is hardly measurable.
I suspect when that is sorted out the other faults could disappear without further effort.
It is time to find a circuit diagram and to trace the tail light wiring from the supply to the lamps in order to discover what went wrong.
SOURCE: # 4 fuse blew out,
I KNOW YOU HAVE AN ELECTRICAL SHORT.WAS AN ALARM INSTALLED OR ANY OTHER TYPE OF ACCESSORY? CHECK WITH DODGE TO FIND OUT ABOUT A RECALL.IF SOMETHING WAS INSTALLED, TAKE IT BACK THERE TO STRAIGHTEN IT OUT IF NOT HAVE A AUTO TECHNICIAN CHECK IT FOR YOU.
SOURCE: T100 tail lights & dash light keep blowing fuses
If this vehicle has a trailer harness, that could be the problem; it could be shorted out. Additionally, if there is no trailer harness, look under the truck bed at the rear, look for a grey wiring connector that wires come out of, and run to the taillamps. I have observed corrrosion in this connector, which will result in a short circuit. You may find it necessary to cut the connector out and resplice the wires back together (eliminate the connector), if severe corrosion is indeed present.
SOURCE: blows fuses
SOUNDS LIKE THE ALARM HORN IS SHORTED, CAUSING FUSE TO BLOW.
TRY UNPLUGGING ALARM HORN & SEE IF FUSE STILL BLOWS.
IF IT DOES NOT BLOW, REPLACE ALARM HORN.
SOURCE: FUSES KEEP BLOWING FOR THE DASH AND TAIL LIGHTS
your lights are grounding out some where you will have to check for a dead short in the wiring use a volt meter in the resitance mode and track through you power side of the lights untill you find your dead short, start at the back and work your way to the fuse box pull the fuse and follow the wire. there is a short in it it will just take some time going through look for worn coating, cracks, or melted.
good luck & and happy hunting
SOURCE: 2006 f150 keeps blowing turn signal fuse
It sounds like the fuse is doing what it is supposed to do, and burning out when there is a short circuit. Check the wiring from the fuse block back to the lights and pay special attention to the trailer connection.
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