Check the fuses
Check bulbs they are double filamneted smaller for stop lights larger for tailights Check fuse (parking/tailights/dash) Maybe a bad headlight switch
The circuit becomes open and hence the other bulbs too stop working.......
Check the fuses first!
If one wire was to break only one of the bulbs on the circuit would stop working whereas if one wire broke on a series circuit all the bulbs would stop working.
Check the bulbs - they are double filamented - smaller for stop/turn and larrger for tailights Check the sockets for corrosion Check the sockets for power /ground
If the parking/tailight fuse is good - then it may be a bad headlight switch No tail lights but the bulbs are working? Please explain.
Faulty light bulbs, damaged engine.
check your bulbs some bulbs have two filament on them one may be out and the other working.
check all your ground wires
Bad bulbs? Sockets corroded?
Check bulbs, fuses, and check for wiring problems
Check the bulbs, check the fuse, check the flasher relay, in that order.
I would guess that both of your brake light bulbs are burned out, and only the high mount bulbs are still working.
If you put the bulbs in at the same time, they would die out at the same time.
FAN MOTOR BROKEN----TEMP SENSOR OUT OF RANGE----RELAY IS BURNED OUT---BAD WIRE