If you have the 3rd light working, then you already have a brake signal going to the back of your van. This eliminates the fuse & switch. I would check the bulbs again. I've seen bad bulbs that looked good. make sure the bulbs are correct for the vehicle.. make sure they are installed correctly.
check the fuse then the bulbs then the brake switch
Please check the Brake light switch....The brake light switch should be located near or on the brake pedal (up on the stem of the brake pedal)
Check bulbs, fuses and brake switch in that order.
Check the fuse, check the bulbs and check the brake light switch, it should be one of those.
Check all the fuses. If not bulbs or switch that's all that it can be,
AnswerThe bulbs for the brake lights are usually separate from the normal tail light bulbs. Check and replace the brake bulbs first, and if they are still not working examine the fuses, switch and wiring.
If the brake light fuse is good and the brake light bulbs are good it's probably a faulty brake light switch.
Bad bulbs or brake light switch.
Check the fuse, the bulbs, and the brake light switch.
If the bulbs and fuses are fine, it must be your brake light switch attached to the arm on your brake pedal.
check your bulbs
Possible bad switch on the brake pedal? When you push on the brake pedal, it activates a switch, that switch turns on your brake lights. If the bulbs and fuses are ok, check the switch with an ohmeter.
check wiring, check bulbs, check fuse, check brake light switch,
Check the bulbs, the fuse and the brake light switch.
Check the bulbs, the fuse then the brake light switch.
fuse, bulbs, switch on brake pedal.
Change out the flasher relay located under the dash. Not the brake light switch which is activated by the brake pedal. Replacing the relay should solve the problem.
check fuses, and then check for power to the bulbs check for power in and out of brake switch
you do not adjust the brake lights check the bulbs or check switch top of brake pedal.
Brake light switch on the brake pedal is defective
check the wires at brake light switch on brake pedal they are bad about breaking brake light switch
Check the brake light switch it's self, it should be on the brake peddle arm or bracket. The switch should show open when the peddle is neutral and should show closed when the peddle is pressed. If the switch shows nothing either way then it's hooped.
Bulbs blown/Brake lamp switch inoperative
it maybe the brake switch