Trailer brake/turn signal lights not working...HELP!!! - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 03-12-2008, 04:23 PM Thread Starter
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Trailer brake/turn signal lights not working...HELP!!!

My trailer running lights work fine, but the turn signals and brake lights do not. I tested the female plug on the truck side to see if I was getting power to it, and it is not. Is there a relay or fusable link some where that could be bad? The turn signals and brake lights work fine on the truck. It is a 20000 Excursion deisel, and I am supposed to tow my race car to Road Atlanta (6hrs) tomorrow morning!!!! Any help would be greatly appreciated.
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post #2 of 16 Old 03-12-2008, 04:29 PM
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If they work on the truck it has to be in the wiring from the plug to the tee in the harness. Check the wiring from the plug back to the tee.

2002 F-250 4x4 EC, SRW, SB
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post #3 of 16 Old 03-12-2008, 04:32 PM
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Are you running a brake controller or is this your 4 wire plug not working?

2002 F-250 4x4 EC, SRW, SB
Auto 93,000 miles
DP Tuner F5
ATS Compressor and 1.0 Exhaust housing high flow back plate
Turbo Back 4" Silverline Exhaust Mbrp Muffler Delete
Isspro Trans,Pyro,Boost Triple Pod
Fumoto Oil Drain Valve
AIH Delete With Boost Fitting

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post #4 of 16 Old 03-12-2008, 04:43 PM Thread Starter
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I was running a controller, and the light lit up on it when I hit the brakes. When I was trying to figure out what was happenning with the lights, I just unplugged it to see if that may have had something to do with it. Apparently it doesn't, but it is still unplugged right now. I can just use the 4 wire plug, and that is what is in there now.
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post #5 of 16 Old 03-12-2008, 04:51 PM
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if wired correctly, the trailer feeds have seperate fuses. I think they are in the power distribution box under the hood. Do you have an owners manual?

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post #6 of 16 Old 03-12-2008, 04:53 PM Thread Starter
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I don't have an owners manual. I do have one of those crappie Haynes manuals, but that hasn't been too helpful.
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post #7 of 16 Old 03-12-2008, 04:59 PM
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Here is an owners manual online should be close to the same. Go to page 175 http://www.motorcraftservice.com/pub.../01f23og4e.pdf

2002 F-250 4x4 EC, SRW, SB
Auto 93,000 miles
DP Tuner F5
ATS Compressor and 1.0 Exhaust housing high flow back plate
Turbo Back 4" Silverline Exhaust Mbrp Muffler Delete
Isspro Trans,Pyro,Boost Triple Pod
Fumoto Oil Drain Valve
AIH Delete With Boost Fitting

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post #8 of 16 Old 03-12-2008, 05:25 PM Thread Starter
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Guys...................you are awesome! Just replaced the (2) 7.5 amp fuses, and it works like a champ. I truly appreciate your help. Gotta get an owners manual off ebay in case I'm on the side of the road sometime. Again, I truly appreciate your help. Gonna get a good nights sleep now.
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post #9 of 16 Old 03-12-2008, 05:34 PM
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Hey I learned somthing today as well. I didn't realize the trailer feeds were seperate from the truck lights

2002 F-250 4x4 EC, SRW, SB
Auto 93,000 miles
DP Tuner F5
ATS Compressor and 1.0 Exhaust housing high flow back plate
Turbo Back 4" Silverline Exhaust Mbrp Muffler Delete
Isspro Trans,Pyro,Boost Triple Pod
Fumoto Oil Drain Valve
AIH Delete With Boost Fitting

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post #10 of 16 Old 03-28-2008, 03:56 PM
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Thanks!!!!!!!!!

This place is so awesome!!!! After chasing wires and fuses for hours I came inside and logged on, did a subject search, and 15 minutes later I was ready to roll. I pull my trailer for a living and really needed to get this problem fixed fast. Thanks so much for all of you that contribute your vast knowledge and experience to those of us that need help.

Thanks Again!

Mike

OkieFordFan
'08 F-250 Crew
All Stock (For Now!)
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