Brake lights stopped workin?

[hvprohop23]

So to start my day off i locked my keys in my truck today. I had an ex military guy i know come and get it open with a slim jim but it took him about 30-40 minutes so i was pretty proud of that but for the rest of the day i've been buildin fence and cuttin trees down and gettin to the top of the property is no cake walk. I got to the top of the hill and my girl was behind me on the 4 wheeler noticed my brake lights werent workin? Gettin up there the truck takes some pretty rough bums so could i have knocked something loose? They DO work when my lights are on but with the lights off and the truck runnin i have no brake lights?

Any ideas?

[forddieseldoctor]

That makes no sense. Does your third brake light work or is that out too? Check your switch on the pedal and make sure you have power on one side and that the switch is closing when you push on the pedal. From there it goes up through the turn signal switch to the back except for the 3rd brake lamp skips the turn signal switch. Some of the F-150's have problems with the connector coming loose on the back of the turn signal switch and you will loose turn signals and brake lights. If my memory serves me right they use a very similar plug on the back of your switch. The wires also like to pull out of this connector.

[thbd77]

my tabs broke on the turn signal plug in the steering column my X and came unplugged and my lights quit. Zip tied it back together

[hvprohop23]

Originally Posted by forddieseldoctor

That makes no sense. Does your third brake light work or is that out too? Check your switch on the pedal and make sure you have power on one side and that the switch is closing when you push on the pedal. From there it goes up through the turn signal switch to the back except for the 3rd brake lamp skips the turn signal switch. Some of the F-150's have problems with the connector coming loose on the back of the turn signal switch and you will loose turn signals and brake lights. If my memory serves me right they use a very similar plug on the back of your switch. The wires also like to pull out of this connector.

hmm, i'll have to look into that tomorrow on my day off. If im thinkin right though i dont remember seein anything plugged into my brake pedal? Only my gas pedal? But i'll trust the mechanic

[forddieseldoctor]

Take a look up a little higher. It's right by where the rod comes through the firewall for the master cylinder.

[hvprohop23]

Originally Posted by forddieseldoctor

Take a look up a little higher. It's right by where the rod comes through the firewall for the master cylinder.

ok i found it, wiggled it around, made sure it wasnt loose. But still nothin, ALL my other lights do work, turnin signals etc.. Does that point it in any direction?

[hvprohop23]

Originally Posted by forddieseldoctor

Take a look up a little higher. It's right by where the rod comes through the firewall for the master cylinder.

Problem solved!! I got to thinkin and i had just wired in a bar light on the back of the truck and apparently it was pullin to many amps for the fuse so it popped. It was the only 20amp fuse in the box? So i swapped it for a 30 and everythings good

[forddieseldoctor]

DON'T INSTALL LARGER FUSES IN YOUR TRUCK. You WILL burn up the fuse box if something shorts out. I've seen it done before. Just go back to the stock size and if it pops again then start looking for the short.