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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: 16,107
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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: 10,726
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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 /2023 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: 2,828
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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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