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Old Feb 18, 2012 | 06:34 AM
  #1  
ford4ever_2003's Avatar
ford4ever_2003
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turn signal

i have a 77 f150 4x4 my blinkers work good when the lights are off. but when i turn the headlights on the left blinker at times either blinks really slow or not at all. and it doesnt do this all the time. i was wondering if it was the switch or where to start looking. thanks
 
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Old Feb 18, 2012 | 11:15 AM
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Ole Green 1978
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Probably not the switch since it's working. If you won't to do it right pull the instrument cluster out. Clean the paper circuit with rubbing alcohol. Clean all contacts and where the main cluster plug goes in. The replace your blinker bulbs. Plug it back in and see what you got.
 
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Old Feb 18, 2012 | 11:25 AM
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This is a textbook case of ground shift in the bulb socket itself. Replace both front turn signal sockets.

The cluster is not related to the issue.
 
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Old Feb 18, 2012 | 03:15 PM
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Originally Posted by fmc400
This is a textbook case of ground shift in the bulb socket itself. Replace both front turn signal sockets.

The cluster is not related to the issue.
I concur, I had the same problem a wile back with the rear. I replaced the rear harness problem was solved...hope all goes well
 
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Old Feb 19, 2012 | 05:52 PM
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the reason i think its the switch is because if i wiggle the switch a little it starts to work
 
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Old Oct 20, 2012 | 09:13 AM
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Hey did you resolve your turn signal issue, and what fixed it?
 
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Old Oct 20, 2012 | 09:23 AM
  #7  
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Did you resolve your turnsignal issue? If so, what was the problem. I have the same truck with same issue.
 
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Old Aug 14, 2013 | 09:12 PM
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The guy I bought mine from had replaced 2 of the sockets. I replaced the other 2 and still had the same problem. After checking his work, I found he had wired one of the sockets backwards.
 
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