Hazard Light Problem - 87 F-150.
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Senior User
Joined: Jan 2000
Posts: 354
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From: Irving Texas
Hazard Light Problem - 87 F-150.
I have replaced:
1. all light bulbs
2. Both flashers
3. Turn Signal / Hazard Switch in Steering Column.
And it still does not work.
The turns signals work great.
When I turn on the Hazards,
1. Nothing happens.
2. When I use the turns signal for right or left do not work (Like they should)
3. When I hit the brakes
A. All lights for turn signals light up.
B. The turn signal lights for left and right light up in the truck...
It is like the flashed behind the fuse panel still does not work...
Any ideas..
If it is a short.
What is the best for to find it..
Thanks.
Thanks in advance.
1. all light bulbs
2. Both flashers
3. Turn Signal / Hazard Switch in Steering Column.
And it still does not work.
The turns signals work great.
When I turn on the Hazards,
1. Nothing happens.
2. When I use the turns signal for right or left do not work (Like they should)
3. When I hit the brakes
A. All lights for turn signals light up.
B. The turn signal lights for left and right light up in the truck...
It is like the flashed behind the fuse panel still does not work...
Any ideas..
If it is a short.
What is the best for to find it..
Thanks.
Thanks in advance.
Postmaster
Joined: Jul 1999
Posts: 3,172
Likes: 4
Hazard Light Problem - 87 F-150.
Its possible the turn signal / emergency flasher assembly mounted under the steering wheel has a short that is causing your problem ? They are integrated . I had to replace mine about 5 yrs ago due to its failure . Id consult a wiring diagram and verify whats going on before you start changing parts . All the systems you mentioned use common circuits . Its always best to verify the problem first .
Paul
Paul
Senior User
Joined: Mar 2000
Posts: 360
Likes: 0
Hazard Light Problem - 87 F-150.
I don't know if this will help, this info is from a 94, but wouldn't think there would be too many changes there.
When the Hazard switch is ON, the 12 volt line through the brake light switch is disconnected from the brake lights at the Hazard switch part of the multifunction switch.
Verified this on mine, when Hazard is ON, pressing on brake has no effect at all. The only place these two circuits come together is in the Hazard switch area of the multifunction switch. Possible some adjacent wires a bit bare at the switches connector in the column, or replacement switch has problems?
When the Hazard switch is ON, the 12 volt line through the brake light switch is disconnected from the brake lights at the Hazard switch part of the multifunction switch.
Verified this on mine, when Hazard is ON, pressing on brake has no effect at all. The only place these two circuits come together is in the Hazard switch area of the multifunction switch. Possible some adjacent wires a bit bare at the switches connector in the column, or replacement switch has problems?
New User
Joined: Jul 2000
Posts: 1
Likes: 0
Hazard Light Problem - 87 F-150.
Two Possibilitys:
1) did you get the correct column switch part? EVERY circuit runs through this part!
2) check your light SOCKETS. I had three out of four bad in my tail lights.
1) did you get the correct column switch part? EVERY circuit runs through this part!
2) check your light SOCKETS. I had three out of four bad in my tail lights.
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Posting Guru
Joined: Jun 1999
Posts: 1,525
Likes: 1
Hazard Light Problem - 87 F-150.
Sounds to me like it is hunting for a ground point,so, you must have bad sockets........or.........a defective turn signal switch.
Phillip
ps. i you have a trailer tee, remove it before proceeding further
Phillip
ps. i you have a trailer tee, remove it before proceeding further
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