Tail lights, Parking lights, Dash lights not working - fuse keeps blowing
Just to give a little information to explain the history as to when this all started, I had my new stereo head unit installed. Not long after this, my dash lights went out. I tried replacing the Fuse 8(5A) several times, and it would work for a couple weeks and then blow. Now it blows as soon as it is plugged in. I changed out my brake lights/tail lights/turning signal bulbs (same bulb) to brand new LED bulbs. They worked for a couple weeks, and then the tail lights cut off (brake and turning signal lights still work). Now that this has happened, my head lights don’t turn off with the headlamp switch, so I have to turn it to the off position, and use the key knob; hit lock button twice until the horn honks and then the lights go out, or pull fuse from PDB, or unplug the battery power. Otherwise they will stay on all day/night. No longer have chime/ding when lights are on and drivers side door is open either.
Fuses that keep blowing:
Power Distribution Box – Fuse 6 (15A)
Passenger Compartment Fuse Panel – Fuse 8 (5A)
I've researched on google and everything and I know this is kind of a common problem, but couldn't get an exact answer as to what it could be. I know it could be the headlamp relay, park lamp relay, headlamp switch, or even the Daytime Running Lamps relay. I'm wondering though if the LED taillights didn't cause this to happen since they don't use as much power as normal bulbs, and therefore it sent more power back to the fuse. So if that is the problem, could I increase the amps on PDB F6 (15A) up to 20A and be safe?
Does anyone have any other ideas or suggestions on what to check?
Complete Fuse & Relay Diagram for 2001 Ford F150:
http://fusesdiagram.com/ford/fuse-box-diagram-ford-f150-1997-2003.html
