07 Brake lights\Rear Turn Signal\Rear Flashers Not Working
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Joined: Aug 2010
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From: NC
07 Brake lights\Rear Turn Signal\Rear Flashers Not Working
I have an 07 F250. I have the factory tow package and have been towing a 14ft trailer. I noticed the other day that the blinkers were blinking faster than usual. Checked all the lights and everything worked except for the truck brake and blinkers. Trailer lights worked fine other than a faster than usual blink. Dropped the trailer and when I checked the truck lights I found that: -rear brake lights didn't work
-rear turn signals didn't work
-rear flasher didn't work
-rear driving lights worked as did the license plate light
***All lights in the front worked***
Checked: All fuses under steering wheel and under the hood.
Contacts in the trailer jack.
Contacts in the steering column(possible pulled wire from tilt wheel)
Grounds to the frame in the rear
Brake switch should be ok since the trailer brake lights work right?
Flasher should be ok since the truck front and trailer blinkers and 4 ways work also right?
Been researching this for a few days. I wanna drop this trailer but I cant until the truck rear lights are resolved. Any help would be greatly appreciated.
-rear turn signals didn't work
-rear flasher didn't work
-rear driving lights worked as did the license plate light
***All lights in the front worked***
Checked: All fuses under steering wheel and under the hood.
Contacts in the trailer jack.
Contacts in the steering column(possible pulled wire from tilt wheel)
Grounds to the frame in the rear
Brake switch should be ok since the trailer brake lights work right?
Flasher should be ok since the truck front and trailer blinkers and 4 ways work also right?
Been researching this for a few days. I wanna drop this trailer but I cant until the truck rear lights are resolved. Any help would be greatly appreciated.
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Joined: Jun 2002
Posts: 10,511
Likes: 10
From: Under the flightpath of old ORD 22R
What fuses did you check, and how ?
-Not too sure why you would check the fuses for the radio when you have an issue with the Stop / Turn lamps if you really checked all fuses.
- How did you check the fuses, with a meter or the less than accurate pull and stare method ?
By 'check the contacts in the trailer tow adapter' I assume this means you did some sort of test to the trailer tow adapter ( 4 pin and/or 7 pin ), what did you test and how ?
The MFS should not be the issue if the trailer's stop / turn lamps work correctly, as the truck and the trailer lamps exit the MFS in the same place.
- BTW : What "contacts" did you check in the steering column and how ?
Did you check the truck's Stop / Turn bulb socket with a meter for + VDC when using the flashers or brake lamps ?
- Stop / Turn Bulbs could be burnt out, but you make no note of checking for this. At home when a lamp does not work, do you go replacing the breaker in the panel, or testing the outlet or do you start with replacing the bulb in the lamp ?
Did you pull the L & R Stop / Turn fuses for the Trailer Tow adapter and retest the operation on the truck's Stop / Turn lamps ? ( the problem appears to have started after hooking up the trailer so isolation is in order ).
BTW : Do not cross post threads in multiple forums.
-Not too sure why you would check the fuses for the radio when you have an issue with the Stop / Turn lamps if you really checked all fuses.
- How did you check the fuses, with a meter or the less than accurate pull and stare method ?
By 'check the contacts in the trailer tow adapter' I assume this means you did some sort of test to the trailer tow adapter ( 4 pin and/or 7 pin ), what did you test and how ?
The MFS should not be the issue if the trailer's stop / turn lamps work correctly, as the truck and the trailer lamps exit the MFS in the same place.
- BTW : What "contacts" did you check in the steering column and how ?
Did you check the truck's Stop / Turn bulb socket with a meter for + VDC when using the flashers or brake lamps ?
- Stop / Turn Bulbs could be burnt out, but you make no note of checking for this. At home when a lamp does not work, do you go replacing the breaker in the panel, or testing the outlet or do you start with replacing the bulb in the lamp ?
Did you pull the L & R Stop / Turn fuses for the Trailer Tow adapter and retest the operation on the truck's Stop / Turn lamps ? ( the problem appears to have started after hooking up the trailer so isolation is in order ).
BTW : Do not cross post threads in multiple forums.
