Reply
 
Thread Tools Display Modes
Old 05-08-2015, 03:13 PM   #1
Member
 
Join Date: Apr 2014
Posts: 65
Fifth wheel running and tail lights

My fifth wheel brake and turn signals work but ny tail lights and running lights don't. Think problem is in truck. All fuses ok. Maybe a relay. Does anyone know how to test a relay.


Sent from my iPad using Forest River Forums
__________________

__________________
safrog is offline   Reply With Quote
Old 05-08-2015, 03:24 PM   #2
Senior Member
 
Witch Doctor's Avatar
 
Join Date: Feb 2012
Location: Clarksville Va.
Posts: 7,632
Quote:
Originally Posted by safrog View Post
My fifth wheel brake and turn signals work but ny tail lights and running lights don't. Think problem is in truck. All fuses ok. Maybe a relay. Does anyone know how to test a relay.


Sent from my iPad using Forest River Forums
What do you mean Running Lights? Marker lights maybe. Mine will blow a fuse every 50 miles or so, FR gave up and said I must be hitting a staple now and then. I put an resettable fuse in my truck for that. You need to put a meter on your plug in on TV and check if it's getting 12 V. Did you check the Tail lights with a meter?
__________________

__________________
Rockwood #8289 WS 2012
F250 6.0 / Husky 16k
With 4 point leveling system
Witch Doctor is offline   Reply With Quote
Old 05-08-2015, 03:59 PM   #3
Senior Member
 
brookstone345sa's Avatar
 
Join Date: Oct 2014
Location: Wilmington, De
Posts: 137
With tow package there are fuses under the hood also, process of elimination. Start under hood and work back. Make sure your plug is making good contact and not corroded. Try tester at plug on truck and see if you have power there.
__________________
brookstone345sa is offline   Reply With Quote
Old 05-08-2015, 04:18 PM   #4
Member
 
Join Date: Apr 2014
Posts: 65
There is a relay for trailer under the hood of my truck. I am wondering if anyone out there know how to test relays. Guess I can get another one and replace it to see if that does to.



Sent from my iPad using Forest River Forums
__________________
safrog is offline   Reply With Quote
Old 05-08-2015, 04:47 PM   #5
Phat Phrog Stunt Crew
 
elind's Avatar
 
Join Date: May 2012
Location: Upper Penisula Michigan / Arizona
Posts: 2,482
Quote:
Originally Posted by safrog View Post
There is a relay for trailer under the hood of my truck. I am wondering if anyone out there know how to test relays. Guess I can get another one and replace it to see if that does to.



Sent from my iPad using Forest River Forums
My GMC had a blown fuse under the hood for my running lights. GM has a fuse box on the drivers side with square cover over it. Pop open the cover and there is a diagram with all the fuses listed. You may be lucky and replace it with no more problems.
__________________
Ed & Ruthann / Toby and Tucker
2014 GMC Sierra Crewcab 2500 Duramax
2014 Wildcat 327ck
2015 129 nites
2016 63 nites
elind is offline   Reply With Quote
Old 05-08-2015, 08:35 PM   #6
Senior Member
 
Filthy Beast's Avatar
 
Join Date: Aug 2009
Posts: 627
I had an issue with lights once also on my Chevy. There was another fuse box on the left side of the dash that had a blown fuse.
__________________
Goody Two Shoes and the Filthy Beast
2008 Chevy Silverado 2500HD
Duramax and Allison 6 speed
2012 Wildcat 282RKX

You can't make things idiot proof, you can only make them idiot resistant.
Filthy Beast is offline   Reply With Quote
Old 05-08-2015, 08:52 PM   #7
Senior Member
 
Witch Doctor's Avatar
 
Join Date: Feb 2012
Location: Clarksville Va.
Posts: 7,632
Quote:
Originally Posted by safrog View Post
There is a relay for trailer under the hood of my truck. I am wondering if anyone out there know how to test relays. Guess I can get another one and replace it to see if that does to.



Sent from my iPad using Forest River Forums
The only way to test it is your going to have to know what is common, normally open and normally closed. Relays are cheap if in doubt just get a new one. You still need to check the output at the TV first, then the bulbs and then the relay if no power is shown.
__________________
Rockwood #8289 WS 2012
F250 6.0 / Husky 16k
With 4 point leveling system
Witch Doctor is offline   Reply With Quote
Old 05-08-2015, 11:42 PM   #8
Member
 
Join Date: Apr 2014
Posts: 65
Thanks. I will just get another relay
__________________
safrog is offline   Reply With Quote
Old 05-09-2015, 08:30 AM   #9
2007 WildCat 32QBBS
 
05CrewDually's Avatar
 
Join Date: Jul 2011
Location: NJ
Posts: 1,771
To check a relay just swap it with a known good one such as fuel pump or a/c.
As far as your lighting, check your owners manual first for ALL fuse locations. The trailer plug should be on its own circuit that's why it still works.
Pull the tail lights and replace the bulb or if you have a meter or test light check for power. For both circuits, tail and brake/turn, to be out it may be a bad common ground.
__________________
*Current: 2005 Ford F350 Crew Cab Dually 6.0 diesel 4x4*
*Retired: 1987 F350 Crew Cab Dually 6.9 turbo diesel
2007 Forest River WildCat 32QBBS
05CrewDually is online now   Reply With Quote
Old 05-09-2015, 01:51 PM   #10
Senior Member
 
Join Date: Sep 2014
Posts: 137
I have a similar problem with my 2015 Coachmen Prism 24G motorhome. None of the perimeter (I assume what you call running) lights work, nor do the licence plate lights. All the other lights work (brake, backup, tail, turning, head, etc.). I assumed it was a fuse, so I consulted the Mercedes Sprinter "Fuse allocation supplement", which showed a fuse for just that circuit (Fuse #20, fuse block F55/5, located under the driver's seat). Unfortunately, fuse block F55/5 that fuse #20 was supposed to be on was not there (nor was block F55/7). I assume that the other fuses on those 2 blocks are unnecessary for my Prism. I contacted Coachmen service, they have no idea where that fuse may be. They suggested "in the glovebox" but there are no fuses there.
Does anyone have an idea?
__________________

__________________
jeffrapp is offline   Reply With Quote
Reply

Tags
fifth wheel, light, wheel

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 08:48 PM.