HI please help if you can
I have 1999 ford f250 superduty 5.4 v8 I noticed that my tail lights were not working I replaced the fuse as it was blown break lights worked until i cranked up and applied brakes.
I replaced fuse again an checked brake lights they worked fine until i cranked truck and applied the brakes i did notice the wires were hot at brake pedal switch when they worked while not cranked.I replaced the cruise control release switch I was told that may be the problem since cruise didnt work. it fixed the cruise control but as soon as i pressed the brakes fuse blew again.I replaced brake pedal switch didnt fix it.
I then noticed a little smoke under tailgate i looked and the wire coming out of connector was hot while brakes applied and not cranked. i disconnected that wire put a new fuse in and brake lights worked in center light and passanger side without blowing fuse driver side however does not work. Because i disconnected the brake light wire to driver side green wire.
when i re connected the driver side brake light wire fuse blew.
So I have it narrowed down to driver side brake light. here is my problem.
I have checked all the wires that i can see for bad or frayed /worn naked places i have found none I can get to the wires beside gas tank running the rail to check but it is doubful that it is spot as nothing is rubbing along there.
could it be a relay somewhere? can i just run a new wire from brake light?if so where to i connect to? is there a wiring harness i can just buy and replace the brakelight wires from brakelight to power source I have ran out of things to check on my own Please Help!
try this had kind of same problem my trailor tow socket got moisture, salt ect in it from age made all my signals , brakes . blink and blow fuses, ATfirst thought turn signal switch and replaced it did not fix . traced it to back of socket
Ok checked bulb checked Sockets all good however i noticed that the wire causing the fuse to blow was spliced into my brake light wire so i removed the spliced wire and all lights are working i tested and all are good! fuse is good.
I think the spliced wire was for my electric brake trailer connector i checked trailer lights and they work the 2 other wires coming out of trailer connector
one is blue one is white the blue seems to be connected well but the white has a connector that looks like a ground connector and is not connected but it does look like it has been burnt. I have brake lights working on truck I will investigate the trailer connector and post reply i need to find out if the white wire is suppose to be grounded and what the spliced wire was actually for.