Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Turn signal problems on 1966 Mustang

Old 04-10-2016, 11:16 PM
  #1  
heflinhunter
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Default Turn signal problems on 1966 Mustang

Having owned 2 of them in Sacramento, CA, I wanted another one.

But, little did I know that after spending $40k on parts and labor, and with ALL new parts on both the front and rear signal lights, I now, only have both blinking tail lights, either left or right!

AND when I activate the hazard light switch, ALL but the LH front light blink!

Both stop light & tail lights work fine.

The turn signal switch in the horn button is new, and both flashers work, fine.

How do I get the front ones to work, again. ANYONE?
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Old 04-11-2016, 06:22 AM
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fastbackford351
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Are you getting spark up there? Is the wiring good at the sockets? Make sure the sockets are getting good grounds to the housings. If 3 out of 4 hazards work fine then I'd start with the non-working one and check the stupid stuff first. Bulb, ground, connections, etc.

Take your test light and see if you're getting signal up there to the non-working one. Either work from the light socket back towards the steering column or vica versa and see where you either loose the spark or pick it up.



I don't know if the 66 is the same but on the 67 there are two flashers; One for the turn signals and one for the hazards. I had to replace the one for my turn signals last week because after 50 years it finally gave up the ghost. It would start to flash ok but after a few seconds it would become erratic then stop flashing altogether while the hazards worked fine. The flasher for the turn signal is over the ignition switch and the one for the hazards is above the AC controls (that one is a bit of a bitch to get to).
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Old 04-11-2016, 09:29 AM
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bop11
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here is a typical Ford turn signal setup. This sounds like a problem in the 10 pin connector at the base of the column or the the emergency flasher switch.
Attached Files
File Type: pdf
turn signals Model (1).pdf (30.6 KB, 300 views)
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Old 04-11-2016, 12:11 PM
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heflinhunter
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Well, Bop11, the forum won't let me see your schematic.
And, fastbackford351, I'll see if your suggestions will help. And, I'm sure there are 2 flashers as I can them, separately.
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Old 04-12-2016, 09:13 AM
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bop11
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Try
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Old 04-12-2016, 11:59 AM
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heflinhunter
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Red face Naples, FL 1966 Mustang Turn Signals won't work

Thanks bop11 for the schematic. I was able to download it okay.
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