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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

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Old Sep 17, 2022 | 04:21 PM
  #1  
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Blinkers

My drivers side blinker is over powered by my brake light i tried replacing the socket but no change is there an obvious fix I'm missing?
 
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Old Sep 17, 2022 | 08:44 PM
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The rear blinker is the brake light also. There is no separate bulb for the blinker and the stop light. There is a separate filament in the bulb for the running or taillight.
 
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Old Sep 17, 2022 | 11:14 PM
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Originally Posted by Franklin2
The rear blinker is the brake light also. There is no separate bulb for the blinker and the stop light. There is a separate filament in the bulb for the running or taillight.
I am aware but none the less if i press the brake and havd my left blinker on I can't see the blinker
 
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Old Sep 18, 2022 | 07:14 AM
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Originally Posted by triorez25
I am aware but none the less if i press the brake and havd my left blinker on I can't see the blinker
So you are saying you hit the brake on and it stays bright no flashing?
What dose the other side do?
Dose it work right or dose the same?

As a guess I would say the turn signal switch is dirty or bad.
Dave ----
 
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Old Sep 18, 2022 | 07:24 AM
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Originally Posted by FuzzFace2
So you are saying you hit the brake on and it stays bright no flashing?
What dose the other side do?
Dose it work right or dose the same?

As a guess I would say the turn signal switch is dirty or bad.
Dave ----
Yeah about the issue. The other side is fine aside from someone having to hold the lever up instead of it clicking into place
 
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Old Sep 18, 2022 | 07:46 AM
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Originally Posted by triorez25
Yeah about the issue. The other side is fine aside from someone having to hold the lever up instead of it clicking into place
LOL in that case being you need to hold the lever and the light not working right on the other side I would replace the turn signal switch.
Dave ----
 
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Old Sep 18, 2022 | 08:08 AM
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Originally Posted by FuzzFace2
LOL in that case being you need to hold the lever and the light not working right on the other side I would replace the turn signal switch.
Dave ----
Yeah I'll probably start there
 
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Old Sep 18, 2022 | 10:37 AM
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Originally Posted by FuzzFace2
LOL in that case being you need to hold the lever and the light not working right on the other side I would replace the turn signal switch.
Dave ----
To make sure I'm straight on your issue, the turn signals work correctly on both sides without the brake being applied but when the brake is applied only the left side stops blinking?

Besides your cam lock mechanism being broken on the right it would seem to me that if the above is true than the turn signal switch is doing its job. I would look at the wiring diagram and look for other possible issues, the flasher unit perhaps. It would be nice to have the right cam lock working though so it wouldn't be a complete waste of time and money.
 
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Old Sep 18, 2022 | 10:41 AM
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Originally Posted by BigBlue2
To make sure I'm straight on your issue, the turn signals work correctly on both sides without the brake being applied but when the brake is applied only the left side stops blinking?

Besides your cam lock mechanism being broken on the right it would seem to me that if the above is true than the turn signal switch is doing its job. I would look at the wiring diagram and look for other possible issues, the flasher unit perhaps. It would be nice to have the right cam lock working though so it wouldn't be a complete waste of time and money.
The left side still blinks when the brakes on it just isn't bright enough to be seen when I have the housing on if I check it out of the housing and look at the element it's still blinks a bit when I have the blinker onThe flasher should be new as of 5 months ago but i can try to confirm that and yeah having cam lock functional would be great
 
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Old Sep 18, 2022 | 06:00 PM
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I agree with fuzz, it must be the turnsignal switch. There are two inputs for the rear lights on the bright side of the bulbs; 1. the brake switch, 2. the flasher.

If the switch is in the middle, both rear bulbs are attached to the brake switch. If you turn the switch to the left, the switch lifts the bulb off the brake switch, and puts it on the flasher circuit, while leaving the right side brake still attached to the brake switch.

Sounds like the switch is not lifting the bulb off the brake switch when it's moved to the left.
 
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Old Sep 19, 2022 | 10:39 AM
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Originally Posted by triorez25
The left side still blinks when the brakes on it just isn't bright enough to be seen when I have the housing on if I check it out of the housing and look at the element it's still blinks a bit when I have the blinker onThe flasher should be new as of 5 months ago but i can try to confirm that and yeah having cam lock functional would be great
So I understand your issue, when you use only the left blinker with no brake is the brightness normal? What happens with the emergency flashers are on?
 
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Old Sep 19, 2022 | 12:06 PM
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Do you think someone forced the bulb in the socket 180° off?
Dave ----
 
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Old Sep 20, 2022 | 03:32 PM
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Try working through this troubleshooting guide:

https://www.ford-trucks.com/forums/1...ing-guide.html


The guide shows the innards of the dual-filament bulbs, and explains which filament should illuminate when. This is very important, so don’t skip this step.

It also has you install jumpers in place of the flasher units. With the flashers out of the equation, troubleshooting is simplified.
 
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Old Sep 20, 2022 | 05:06 PM
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Was type "F" blinker fluid used?
First sign of wrong blinker fluid being used is what is happening
Dave ----






someone had to say it
 
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Old Sep 20, 2022 | 07:13 PM
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An easy solution is to put BMW badges on the truck. Do that and nobody will expect to see a turn signal.
 
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