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12-23-2014, 11:44 AM
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#1
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Junior Member
Join Date: Dec 2014
Location: League City
Posts: 5
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Running lights not working... Truck side or trailer side?
The running lights on my Swift 154bh have stopped working. But the blinkers and brake lights still work.
I can run a jumper wire from the 12v terminal to the running lights on the trailer plug and the running lights work. If I leave the jumper wire in the plug and I connect the trailer plug to the truck, everything works fine (except the trailer lights stay on all the time).
Is it a problem on the truck side or the trailer side?
Any ideas what the problem could be? A corroded ground somewhere?
Thanks for the help. This just started and we're heading out for Christmas in a couple days. Local service dept is closed.
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12-23-2014, 02:55 PM
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#2
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Senior Member
Join Date: May 2014
Location: Eatonton
Posts: 305
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I would start with the electrical plugs trk/trl. Check this site http://www.etrailer.com/faq-wiring.aspx
Also most auto parts stores have an inexpensive pin tester that you plug into your connectors will tell you if everything is working and can save you a lot of trouble. Good luck.
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12-23-2014, 03:37 PM
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#3
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Senior Member
Join Date: Nov 2014
Location: New Hampshire
Posts: 609
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EVERYTIME I hook up to my dads flatbed trailer to move the tractor... I blow the running lights fuse under the hood of the pickup.
Like clockwork, I need to replace the fuse before towing the camper.
When troubleshooting, always start at the simplest point of failure, and work your way into the most complex.
8 times out of 10, its a blown fuse, 1 times is a loose ground, and the last 1 times is the camper.
__________________
Craig T. Bailey
Hudson, NH
2015 Jayflight 32BHDS
2018 Chevy 3500HD Crew 4x4 Duramax
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12-24-2014, 06:37 AM
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#4
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Senior Member
Join Date: Feb 2014
Location: Fuquay-Varina
Posts: 437
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Agree with ctbailey, check the underhood fuses on the truck. There is normally a seperate fuse for the trailer lights. If that fixes it, then fails again, there is a short in the wiring of the trailer somewhere.
__________________
Steve
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2008 Jay Flight G2 29BHS
2017 Chevrolet Silverado 2500HD Z71
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12-24-2014, 06:50 AM
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#5
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Senior Member
Join Date: Nov 2011
Location: Where ever the boss says we're going.
Posts: 15,943
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Quote:
Originally Posted by SMS1115
Agree with ctbailey, check the underhood fuses on the truck. There is normally a seperate fuse for the trailer lights. If that fixes it, then fails again, there is a short in the wiring of the trailer somewhere.
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It has to be on the truck side. They work if he puts a jumper in place.
__________________
DISNEY LOVERS
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12-24-2014, 07:13 AM
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#6
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Senior Member
Join Date: Aug 2014
Location: St L, Mo
Posts: 105
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it will be a fuse under the hood. You didnt say what kind of truck you have. However our Chevy lot truck blows these things about once a week. Our FORD lot truck blows them about every two weeks. We dont have a Dodge truck, but we get several inquiries, so I assume that Dodge blows them frequently also.
__________________
I started with nothing, and still have most of it left
2001 Jayco KIWI 23B
2003 Jeep Grand Cherokee 4.7 AWD
TIM
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12-24-2014, 09:22 AM
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#7
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Senior Member
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 10,714
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Since they work when you use a jumper wire it is the truck side... Since you have not posted what kind of truck you own it is hard to say much more.. but it has to be a fuse somewhere I am betting..
__________________
Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 900watts of solar, Lithium batteries (400amp hour), 2000 watt (4000 surge) whole house inverter.
145days boondockinig in2023 2022/151 2021[/COLOR]
93/2020,157/2019219/2018 206/2017,215/2016, 211/2015, 196/14, 247/13, 193/12
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12-24-2014, 07:17 PM
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#8
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Senior Member
Join Date: Oct 2014
Location: Decatur
Posts: 2,798
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Truck
Quote:
Originally Posted by livefree
The running lights on my Swift 154bh have stopped working. But the blinkers and brake lights still work.
I can run a jumper wire from the 12v terminal to the running lights on the trailer plug and the running lights work. If I leave the jumper wire in the plug and I connect the trailer plug to the truck, everything works fine (except the trailer lights stay on all the time).
Is it a problem on the truck side or the trailer side?
Any ideas what the problem could be? A corroded ground somewhere?
Thanks for the help. This just started and we're heading out for Christmas in a couple days. Local service dept is closed.
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Hello You are Right down the road from Me ,What is your Tow Veh > ??
__________________
Roy&Joyce
Decatur Al.
Jayco 2022 27RB WhiteHawk
Jayco 330RSTS Gone
Jayco G2 bunkhouse Gone
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12-25-2014, 10:33 AM
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#9
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Senior Member
Join Date: Jan 2011
Location: Vienna
Posts: 2,044
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Now I have a Dodge Truck for many years and pull all kinds of trailers and I have never blown a fuse. Must be living right!
__________________
Joe Hinson
2010 Jayco Quest G2(SOLD)
2014 Jayco Eagle 33.5RETS
2007 Ram 2500 5.9L Cummins(SOLD)
2015 Ram 2500 6.7L Cummins 4WD
:)
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12-26-2014, 09:47 AM
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#10
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Junior Member
Join Date: Dec 2014
Location: League City
Posts: 5
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Thanks for all the helpful replies. I've narrowed the problem down to the circuit protector box that the Reese dealer installed.
There's power going into the box when I turn the running lights on, but no power coming out of it. I checked all other lights the same way and they work fine.
I can't find any info about the "Super Duty Circuit Protector" online. Any idea what would cause it to go out? Possibly a bad one or some other problem in the wiring?
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12-26-2014, 09:49 AM
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#11
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Junior Member
Join Date: Dec 2014
Location: League City
Posts: 5
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Oh, I'm pulling it with a 2002 Toyota Tundra V8 with 80k miles. I checked all my fuses and they're all good.
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12-27-2014, 08:04 PM
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#12
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Senior Member
Join Date: Sep 2010
Location: Fraser Valley British Columbia
Posts: 767
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I always keep my plug coated with die electric grease. It helps keep corrosion from getting in the plug. It could be a bad ground put a jumper cable from the truck frame to the trailer frame where you have no paint like a bolt head. If the lights come on you have a bad ground.
__________________
2010 Jayco Eagle Superlite 256 RKS
2008 Dodge Ram 3500 Cummins
66 nights in 2016
61 nights in 2015
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