That's a big fuse that's probably quite close to the battery. Car electrics are arranged like a family tree where a "parent" fuse (big) will have groups of circuits individually fused beneath them. By balancing all the branches of the circuits, while ensuring certain circuits are either kept together, or kept apart to prevent collossal failure. the manufacturer is trying to improve reliability. Mostly they get it right
Bad bulbs Bad dimmer switch
headlight switch
The low beams and high beams are both H7 bulbs. The fog lights are H3's.
If by "dim headlights" you mean low-beams... the bulbs are bad and must be replaced.
Burnt out bulbs? Defective dimmer switch?
i had this same problem. it was faulty wiring underneath the battery.
your bulbs are burnt out. when you switch on the high beams its only the high beams. but when you flash your brights it lights up both high and low beams.
Bulbs burned out? They are double filamented.
High and low beams have differant filaments. You have to replace the bulbs.
Check the bulbs, check the fuse then check the switch.
If the night running lights have failed the bulbs should be checked. Find the bulb housings and remove the parts. After the bulbs are replaced check the lights.
Low beams - 9006 bulbs or HB4 bulbs High beams - 9005 bulbs or HB3 bulbs