trailer lights do not work........... - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 17 (permalink) Old 12-02-2009, 03:41 AM Thread Starter
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trailer lights do not work...........

guys I need your help, my enclosed trailer lights are not working, but my electric brakes do work. Im pretty confident the trailer is fine, about a month ago I moved it with my brothers truck and the lights worked fine on the trailer then. I dont have a owners manual to look up fuses for 7pin harness fuse. Any ideas what it could be?

06 F250 6.0L ID tuning. RCD EGR delete 03 turbo
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post #2 of 17 (permalink) Old 12-02-2009, 04:36 AM
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So do all your running lights work? I assume what your saying is the interior lights in the trailer dont work. I also assume the trailer would be wired to feed off of the Trailer tow-Battery charge circuit on the 7 pin.

Every trailer circuit has its own fuse, the fuse your looking for will be in the Battery Junction Box under the hood by the battery. Either beside the fuses or on the fuse box cover the fuse numbers will be labeled. Look for fuse #44 it should be a 30amp fuse.

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94 F250 IDI turbo, auto 2wd.. ATS housing, 3" down, 4" exh, guages. 104k miles got totalled by a damn mustang (parts now).

98 12v, 4x4 quad cab. auto with BD T/C & V/B, Banks Big head, Exh brake, AFC modded, 16.5ish*, KDP gone, 60lb springs, 4K-GSK, BHAF, pyro, trans, and boost guages. 4" straight pipe,

72 AM General M35A2, LDT465-1C "Whistler" Turbo, PTO winch.
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post #3 of 17 (permalink) Old 12-02-2009, 04:38 AM Thread Starter
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So do all your running lights work? I assume what your saying is the interior lights in the trailer dont work. I also assume the trailer would be wired to feed off of the Trailer tow-Battery charge circuit on the 7 pin.

Every trailer circuit has its own fuse, the fuse your looking for will be in the Battery Junction Box under the hood by the battery. Either beside the fuses or on the fuse box cover the fuse numbers will be labeled. Look for fuse #44 it should be a 30amp fuse.
no running lights do not work.

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post #4 of 17 (permalink) Old 12-02-2009, 04:42 AM
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ok BRB

My motto: Be nice, be polite, but have have a plan to kill everyone that you meet.

94 F250 IDI turbo, auto 2wd.. ATS housing, 3" down, 4" exh, guages. 104k miles got totalled by a damn mustang (parts now).

98 12v, 4x4 quad cab. auto with BD T/C & V/B, Banks Big head, Exh brake, AFC modded, 16.5ish*, KDP gone, 60lb springs, 4K-GSK, BHAF, pyro, trans, and boost guages. 4" straight pipe,

72 AM General M35A2, LDT465-1C "Whistler" Turbo, PTO winch.
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post #5 of 17 (permalink) Old 12-02-2009, 04:45 AM
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The running/park lamps is in the same fuse box, the fuse number is #42 & 30amp, If you dont have spares and are not using the circuits mentioned above on the trailer i would use fuse #44 for spare

My motto: Be nice, be polite, but have have a plan to kill everyone that you meet.

94 F250 IDI turbo, auto 2wd.. ATS housing, 3" down, 4" exh, guages. 104k miles got totalled by a damn mustang (parts now).

98 12v, 4x4 quad cab. auto with BD T/C & V/B, Banks Big head, Exh brake, AFC modded, 16.5ish*, KDP gone, 60lb springs, 4K-GSK, BHAF, pyro, trans, and boost guages. 4" straight pipe,

72 AM General M35A2, LDT465-1C "Whistler" Turbo, PTO winch.
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post #6 of 17 (permalink) Old 12-02-2009, 04:46 AM Thread Starter
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The running/park lamps is in the same fuse box, the fuse number is #42 & 30amp, If you dont have spares and are not using the circuits mentioned above on the trailer i would use fuse #44 for spare
ok will check in the am to see if thats the issue!

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post #7 of 17 (permalink) Old 12-02-2009, 04:53 AM
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If im thinking correctly those fuses are the wierd looking ones with the window on top. You may want to remember to buy spares to keep just in case. I also usually put a paint pen or magic marker dot on fuses like these to make them more noticeable since they tend to pop more often, It makes them easy to find in the dark too.

My motto: Be nice, be polite, but have have a plan to kill everyone that you meet.

94 F250 IDI turbo, auto 2wd.. ATS housing, 3" down, 4" exh, guages. 104k miles got totalled by a damn mustang (parts now).

98 12v, 4x4 quad cab. auto with BD T/C & V/B, Banks Big head, Exh brake, AFC modded, 16.5ish*, KDP gone, 60lb springs, 4K-GSK, BHAF, pyro, trans, and boost guages. 4" straight pipe,

72 AM General M35A2, LDT465-1C "Whistler" Turbo, PTO winch.
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post #8 of 17 (permalink) Old 12-02-2009, 11:12 PM Thread Starter
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fuse # 42 and 44 are both blown. Where can you get these type of fuses from? What would make these fuses go out?

06 F250 6.0L ID tuning. RCD EGR delete 03 turbo
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post #9 of 17 (permalink) Old 12-03-2009, 12:47 AM
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fuse # 42 and 44 are both blown. Where can you get these type of fuses from? What would make these fuses go out?
autozone,advance,napa they all have them.you have a short in the wiring system somewhere that made them blow.
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post #10 of 17 (permalink) Old 12-03-2009, 01:00 AM
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did you plug the tralier in with the lights turned on?

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