Brake light doesnt work

Check in your vehicle fuse box for the side lights fuse if is blown. Most of the vehicles separate the lights with fuses to work.

didnt specify vehicle -- generic answer -- recheck bulb new doesnt mean free from defect also check the socket --the light that lights up can be the tail lights some vehicles have one bulb but has 2 filiments [brake tail ]

change the bulb if still out then check and test socket/ground wiring/wire harness for damage

When you say you checked the fuse, are you getting power in and out of it and the brake light switch ?

Get a test light and check for power. If you got power check the ground, and the contacts, if not follow the hot wire back to the brake switch to locate the short.

Make sure the fuses are good.There is a fuse for left and right brake lights.The fuse blocks are under the hood and there`s also one under the drivers side rear seat.If the fuses are good then remove the rear lamp assembly and check the bulb.I believe there are 2 screws and then just pull lamp assembly out.Hope this helps.Good luck.

check and see if you are getting power to the brake light from the bulb holder.If your not getting power there then change the brake light swich above the pedal.Good luck

Not even the third eye? then the fuse is blown or all the bulbs are out or the brake light switch on the break pedal is bad wire off or broken( it breaks right off the plug then crosses then blows the fuse as the loose broken wire hits the brake pedel arm. Test the break pedal switch first if the third eye doesesnt work either. no power with a test light the fuse is blown or the wire broke ( the wire goes straight to the switch from the fuse and doesnt go anywhere elese. the other wire if hot should light the lights. Most of these wont come out of park without this working as the wire also turns on the park release but some Fords the park release sticks released and Ford made em that way as they didnt like the brake to get out of park law. If the brake lights dont work maybe you ought not be able to get out of park anyway till its fixed. the switch is hot on both wires with the switch pused down and the lights dont still work go after the third eye first if the bulbs are bad change em before you do the rest of the work. on cars with yellow turn signals the brake lights all work on the same wire but red only use three wires, but you didnt say the turn signales didnt work if they work and they are red you r on the way to the turn signal switch as the brake switch powers the turn switch with power then it splites it fot the two lights and adifferent switch circuit for the front hooks them all together for hazard. yellow turns in the back or even separt bulbs can mean blown bulbs ther too its old enought for all the bulbs to fail and the runs still work.

if the third brake light works you will probably need a brake on off switch. the fuse panels on that truck are under the dash near the steering column and under the hood in the power distribution box. both of these panels are identified in the owners manuel.

try running your own earth wire to your pigs tail---WOW AMERICAN ,iam getting their