Brake lights won't come on. bulbs,ok?/fuse ok. what do i do?

SOURCE: Left rear brake light stopped working but bulb and fuses are OK.

take the bulb back out have someone sit in car apply brake get your self a circuit tester and check to see if this circuit is carrying efficient 12 volt current! some times in cold weather these bulbs get hot with long period of breaking and when released condensate and rust begins and you get what you have perhaps bad socket! this would be a ideal location to begin and probably end,

SOURCE: Left rear brake light stopped working but bulb and fuses are OK.

These are Dual Function Bulbs. They control the Parking Lights and the Brake Lights. This Bulb is Burnt out on the Brake Coil inside the Bulb. I have actually seen Bulbs that were Bad But you could not Tell by jast looking at them. It should be fine with a New Bulb. Please Rate My Response! Thanks!

SOURCE: 1999 cougar brake lights not working Fuse+bulbs+switch ok

I am asking you what switch you cheked and how did you know that is ok and working I had the same problem I replaced the switch under the brake pedal and it works fine if you still have this problem write to me @ [email protected] thank you good luck.

SOURCE: no head or tail lights

sounds like either a break in the running light feed or you have a bad ground on that circuit. pull plug from headlight bulb and with a tester. clip it onto the frame or other good ground. then see if you have power in the plug by sticking the pointy end in the terminal holes. if you do the tester will light up and you have a ground problem. check all ground connections you can find, not just plug in types also the ones that bolt to frame/enging etc. failing this you can always add a new ground locally to each light by splicing the wires into a ground you know is good.

SOURCE: no brake light

Use a multi meter to test operation and continuity from the switch backwards.

Be methodical and logical and you will eventually find the break in the circuit.