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Weird tail light issue

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Old Nov 8, 2005 | 09:44 AM
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wintremute
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From: Graves County, KY
Weird tail light issue
My break/turn signal lights work fine when the headlights are off. When they are on, the left brake and turn signal don't work. I have new bulbs all around and they are the correct bulbs.

Weak ground maybe?

This is on a 77 f150 longbed

Thanks
 
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Old Nov 8, 2005 | 11:00 AM
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http://www.clubfte.com/users/mil1ion...rakeWiring.JPG


http://www.clubfte.com/users/mil1ion...ubleshoot1.JPG
 
Last edited by Mil1ion; Nov 8, 2005 at 11:16 AM.
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Old Nov 8, 2005 | 11:54 AM
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sounds like a bad ground
 
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Old Nov 8, 2005 | 01:05 PM
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Thanks. I'll check that when I get home.

Mil1ion, That second one mentions no inside turn signals. I have that problem too. I hope they are related.
 
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Old Nov 8, 2005 | 03:16 PM
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You mean indicator lights in the cluster.....right ?
 
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Old Nov 8, 2005 | 03:41 PM
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yes exactly
 
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Old Nov 8, 2005 | 08:00 PM
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i had the same problem a while back,it was a bad ground wire on the taillight to the frame(wire attached to the box side, in behind the taillight).-billy
 
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