One brake light out , bulb is good

Hi Jimmy.

Most every circuit in a car goes through a fuse. if you look in your owners manual for the particular vehicle you drive, you should find a listing for a fuse for brake light or brake lights. The tail light being OK should not have anything to do with the brake light. They'll be different bulbs, or, at worst, different filaments in the same bulb, and on different fuses. The brake and tail lights are distinct because otherwise, if you had your tail lights on at night, no one could tell you were pressing your brakes.

If you were meaning that the bulb for the brake light in the tail cluster is good, that also will point to a blown fuse. Check there first.

Good Luck

D

Usually a problem with the turn signal switch.

The third or High Mounted Brake Light runs straight off the brake light switch on the brake pedal arm. You say you tested the "brake unit"? I assume you mean the third brake light assembly, and if you get power there when someone steps on the brake pedal, then the bulbs are bad.

The power flow for the brake lights goes like this: Fuse ->Brake switch -> Turn signal switch -> Rear lights. The only difference is, if you have a 3rd brake light in your rear window, that gets its power directly from the brake switch. It does not go thru the signal switch first. So, if you are having a brake light problem, and your fuses are good, check the 3rd light in the rear window, if it lights up (assuming the bulbs are good, no one ever changes them), then the problem is most likely in the turn signal switch, hope this helps!

change the brake light fuses on ur chrysler 300. also get it checked at a dealer to spot any other issue, if any.

check the bulbs, check the connector ,check ground and voltage power check fuses and check brake light switch right above the brake padal.

Yes, you need to of course check the voltage coming into and going out of the brake light switch, if 12 Volts are there going out and coming in while pressing on the brake pedal, your brake lights aren't getting a good ground or there is a break in the circuit between that switch & the lights.

On occasion the tail lights will work with a weak ground circuit where the Brake lights won't. Best way to determine this is to just hook up the 12 volt tester to the Brake light hot wire & there at the bulb ground, then in an area away from the bulb that has a good possibility of contact/ground.

Really that's it, if the 12Volts is getting to the bulb but it isn't lighting, if you aren't getting the voltage there and the brake switch is hot on both sides when pressed, the break in voltage will have to be traced from that switch to the tail light to find the problem.

good luck.

does the third brake light work when braking ? the bar on the rear window? if not replace brake light switch on brake pedel

Sounds like a broken wire somewhere.
Since the middle brake light works I would suspect it is somewhere in the trunk or close to the back seat.
Buy or make a tester. A 12v light with a clip on one wire that you clip to a good ground on the car the other wire with a sharp point. Turn the turn signals on then poke wire to rear lights until tester lights. When tester lights you know the break is somewhere inbetween the tester and the brake lights.

Hope this helps.

Stan

check to make sure that you used the exact bulb part number that came out. each bulb has a different resistance.

Do you know if the brake light bulbs are working? (are the bulbs good?). (the bulbs have two parts, one for brake lights the other for running lights)
If the third brake light bulb is working the brake lights should be with good light bulbs.