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Old Dec 4, 2006 | 06:30 PM
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NO tail lights!!!

Hello,
I am having some problems with my tail lights on my '89 F-250. They work when you turn on the trun signals, they work when you apply the brakes, but they dont work when you turn on the headlights (like a parking light sorta deal). It just started doing this today.

Any ideas???

TIA
Storman Norman
 
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Old Dec 5, 2006 | 08:08 AM
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The brake/turn signal portion is a separate circuit from the running/parking lamp circuit.

Do your front marker/running lights work or are they also off?

Steve
 
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Old Dec 5, 2006 | 11:38 AM
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Fuse #4 is bad, a 15 AMP fuse.

http://i54.photobucket.com/albums/g9...nel/88Fuse.gif
 
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Old Dec 5, 2006 | 03:58 PM
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Thanks sudford, I'll go get a 15 amp fuse while im out tonight.

Steve, yes the front lights work.


Storman
 
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Old Dec 5, 2006 | 04:02 PM
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Originally Posted by F250FarmBoy
Thanks sudford, I'll go get a 15 amp fuse while im out tonight.

Steve, yes the front lights work.


Storman
If the front parking lights work then the Fuse is good.
 
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Old Dec 5, 2006 | 04:56 PM
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Yea its not the fuse. I just tried that. Im gonna replace the bulbs. If it doesnt work, o well. When it does work, I wont have to worry about bulbs then.
 
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Old Dec 5, 2006 | 08:30 PM
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Your description is a little vague. I am going to guess your turnsignal and brake lights work as you described, and when you turn the headlights on, the taillights do work, but the turn and brake functions will not. The turn and brake functions will work again when the taillights are off.

If this is the correct senario, then it's the classic grounding problem for the rear bulbs. It can be the bulbs are corroded in the sockets, or the ground from the socket to the bed is bad.
 
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