The alternator or battery may be going out, have the system tested at a service garage or a parts store.
You say the fuses are fine, i have just had the same problem. is your radio/headunit also not working??? And have you checked the fuses under the bonnet aswell as in the drivers footwell. I just replaced some of my fuses and it worked fine. Make sure your inginttion is off whilst removing/replacing fuses.(unless testing to see if it worked) Hope this helped!
Switch may be bad
If the bulbs and fuses are fine, it must be your brake light switch attached to the arm on your brake pedal.
I would check the fuses. if all fuses look okay then check the wiring. if the wiring looks fine i would recommend taking it to a shop.
If your 92 Toyota Corolla taillights are out, but the dash light and fuse work fine, the bulbs could have burn out. Replace bulbs on each side.
You probably have a faulty brake light switch
If fuses check out fine, then check the dashlights and taillights themselves, if those check out then most likely there is an electrical problem elsewhere
It could be caused by a bad ground or severed wire somewhere.
My headlights are not working after going thru a car wash. Bulbs and fuses fine.
its the tail light fuse
faulty brake light switch (on pedal)
They probably aren't grounded.