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1993 ford f-150 brake and tail lights wont work


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huntersmith18
Novice

Nov 18, 2011, 1:31 PM

Post #1 of 5 (2732 views)
1993 ford f-150 brake and tail lights wont work Sign In

I have a 93 Ford f-150 and the brake lights and tail lights wont work I tried putting a new light switch in it but it didn't help my bulbs are good and my blinkers work but as soon as I put a new fuse in when I touch my brakes it blows now I am 17 and I live with my grandfather's and he is disabled this is our only means of transportation I work 2 jobs so I need this fixed please help


Hammer Time
Ultimate Carjunky / Moderator
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Nov 18, 2011, 2:01 PM

Post #2 of 5 (2713 views)
Re: 1993 ford f-150 brake and tail lights wont work Sign In

You have a short in the brake light circuit and you are going to have to disconnect things until it stops blowing fuses to find the short.







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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Sidom
Veteran / Moderator
Sidom profile image

Nov 18, 2011, 3:30 PM

Post #3 of 5 (2702 views)
Re: 1993 ford f-150 brake and tail lights wont work Sign In

If you have any add on trailer wiring, I would disconnect that 1st, seen a lot of problem areas there...

To keep from going thru fuses. Hook a test light up to a 12v source (battery or whatever). Probe the load side of the circuit at the brk pedal. Push the pedal & if the light comes on, that would indicate a short. Start disconnecting circuits until the light goes out. Once it goes out, that is the area with the short....






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Discretesignals
Ultimate Carjunky / Moderator
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Nov 18, 2011, 6:09 PM

Post #4 of 5 (2688 views)
Re: 1993 ford f-150 brake and tail lights wont work Sign In

I agree. 90% of the time we see this in the shop it has something to do with how the wiring was done for the trailer harness or a wiring problem in the trailer itself.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


Tom Greenleaf
Ultimate Carjunky / Moderator
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Nov 19, 2011, 4:25 AM

Post #5 of 5 (2678 views)
Re: 1993 ford f-150 brake and tail lights wont work Sign In

Agree now third time. Trailer wiring frequently hacked if it ever was done over the years and will fail there more than other places,

T







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