Brake/Hazard problem
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Senior User
Joined: Jul 2006
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From: New Hampton, IA
Brake/Hazard problem
Hi all, I have an 89 F250 diesel with 256k miles and lots of wiring problems. I have been able to search and find answers to most of my problems, but no luck on this one. A friend pointed out to me the other day that my brake lights are not working. I checked the fuse and it is fine, but I did notice that the current fuse is a 30 and the fuse block diagram calls for a 15. So I got out my test meter and checked the brake switch, which seems to be working fine. Then for some reason I just happened to test the voltage at the fuse and there is nothing. I pulled the manual switch on my trailer brake controller which back feeds power into the brake light circuit and sure enough I have brake lights when I manually hit the trailer brakes. I pulled out all the wiring diagrams I have and they only show after the fuse box, but everything after the fuse box seems to be working like it should. So there are two wires going to fuse #1, a yellow and a white with some other color which I can't remember off the top of my head. Does anyone have any wiring diagrams to show where the wire runs between the battery and the fuse block? I am guessing I probably have a fried wire someplace. Thanks for any help.
Oh also, anyone know where I can get a EVTM for this truck? I have one for my 96 Ranger and love it, but I cannot remember the website where I bought it from.
Oh also, anyone know where I can get a EVTM for this truck? I have one for my 96 Ranger and love it, but I cannot remember the website where I bought it from.
Last edited by GonzoCSU; Oct 23, 2006 at 06:00 PM.
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
Originally Posted by GonzoCSU
Oh also, anyone know where I can get a EVTM for this truck? I have one for my 96 Ranger and love it, but I cannot remember the website where I bought it from.
This should be close to your fuse box power.
http://i54.photobucket.com/albums/g9.../PowerDist.jpg
Thread Starter
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Senior User
Joined: Jul 2006
Posts: 395
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From: New Hampton, IA
Ahh yes Helm is where I got my last EVTM, not sure why I couldn't remember that. Thanks for the diagram that helps out a lot. I traced that yellow wire a few weeks ago when I was having different electrical problems and I know it has power coming into the cab, and my horn and door locks work so I guess I am going to have to start digging around in the mess of wires under the dash.
Fleet Owner
Joined: Aug 2005
Posts: 23,668
Likes: 301
From: Easton,Ks
Originally Posted by GonzoCSU
Ahh yes Helm is where I got my last EVTM, not sure why I couldn't remember that. Thanks for the diagram that helps out a lot. I traced that yellow wire a few weeks ago when I was having different electrical problems and I know it has power coming into the cab, and my horn and door locks work so I guess I am going to have to start digging around in the mess of wires under the dash.
