Tail lights work Blinkers dont.
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New User
Joined: Mar 2009
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Tail lights work Blinkers dont.
Im stuck. 1977 F250 4x4
The headlights and tail lights work.
The blinkers dont.(front or rear)
Hazards work in the front but not in the back.
All the breakers are good.
Grounds in the back are good maybe Im missing one?
Flashers work and there is power to both.
I changed both flashers
Hazard flasher clicks Blinker flasher does'nt.
Any Help would be appreciated
The headlights and tail lights work.
The blinkers dont.(front or rear)
Hazards work in the front but not in the back.
All the breakers are good.
Grounds in the back are good maybe Im missing one?
Flashers work and there is power to both.
I changed both flashers
Hazard flasher clicks Blinker flasher does'nt.
Any Help would be appreciated
Laughing Gas
Joined: Jun 2007
Posts: 811
Likes: 4
I just went through this with my 76. Very frustrating. I thought I had all the grounds covered. Turned out I had to clean out some thick powdercoating. I would double check all of your grounds, including the bulb sockets. Clean everything up with some sandpaper.
Certified Thread Hijacker
Joined: Aug 2001
Posts: 14,441
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You didn't say if your Brake lights work. Or say whether the bulbs are any good.
Is the Brake light fuse good?
Josh
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Joined: Dec 2007
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I was gonna go with a turn signal switch, I had no brake lights/turn signals on my 73 when I got it, and thats all it was. My '70 had the same issue, but after checking grounds and fuses, they started up working fine. Now I kinda wonder if my '73 even needed the switch.
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Laughing Gas
Joined: Jun 2007
Posts: 811
Likes: 4
My money is on the ground. As 4X4 Bart said, get a continuity testor. A cheap one from Harbor Freight will work fine. Check both connections in the socket, grounding each one. If both connections in the socekt show power when properly grounded, you need to look at the grounds for the socket. My 76 is grounded to the assembly itself. IF there is corrosion, paint or powdercoating, it can interfere with the ground.
Senior User
Joined: Mar 2009
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i have a similar problem.....my brake and tail lights work but my turn signals only work when they want too.....most of the time they dont..what could i do right away to try to fix the problem, because it almost got me a ticket the other day...lol..
More Turbo
Joined: Apr 2007
Posts: 572
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I had the same problem with my 78 last year, the back turn signals would turn on, but not blink, and the 4 ways worked on the back, not the front. In my case it was the sockets, which I got new ones from Schucks that are made out of metal, and I think were $10-12 a piece, I'll post up the PN tomorrow.
New User
Joined: Jun 2010
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From: lake of the ozarks
I'm having the same problems
I just bought a 74 f 100 the hazard lights work all four flash. Turn off the hazards and try to turn on turn signal nothing happens. If the headlights are on and you try to turn signa onl a faded arrow comes up but nothing blinks. I'm going to try the ground connects.