Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK2 - > Trouble Shooting/Problems/Service

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 04-27-2012, 10:54 AM
Member
 
Join Date: Mar 2012
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1690
windsurfnut is on a distinguished road
trailer running lights not working

Can anyone help me, my trailer running lights stopped working. Brake and signal working fine.
Using the 4 pin connector

Wondering if I shorted a fuse, that may be separate from the brake/signal lights that I'm missing here.
Thanks
__________________

Reply With Quote
  #2  
Old 04-27-2012, 02:38 PM
Angler's Avatar
Member
My Jeep: 2012 5.7L WK2
 
Join Date: Jan 2012
Location: San Antonio, TX
Posts: 382
Thanks: 29
Thanked 16 Times in 16 Posts
Rep Power: 62662
Angler has a reputation beyond reputeAngler has a reputation beyond reputeAngler has a reputation beyond reputeAngler has a reputation beyond reputeAngler has a reputation beyond reputeAngler has a reputation beyond reputeAngler has a reputation beyond reputeAngler has a reputation beyond reputeAngler has a reputation beyond reputeAngler has a reputation beyond reputeAngler has a reputation beyond repute
Re: trailer running lights not working

Whenever I have trouble with trailer lights it always seems to be a ground wire problem.
__________________

Reply With Quote
  #3  
Old 04-28-2012, 05:43 PM
77Cherokee's Avatar
Member
My Jeep: 2012 3.6L WK2
 
Join Date: Jun 2011
Location: NY State
Posts: 652
Thanks: 0
Thanked 21 Times in 19 Posts
Rep Power: 2885
77Cherokee has a reputation beyond repute77Cherokee has a reputation beyond repute77Cherokee has a reputation beyond repute77Cherokee has a reputation beyond repute77Cherokee has a reputation beyond repute77Cherokee has a reputation beyond repute77Cherokee has a reputation beyond repute77Cherokee has a reputation beyond repute77Cherokee has a reputation beyond repute77Cherokee has a reputation beyond repute77Cherokee has a reputation beyond repute
Re: trailer running lights not working

If you have access to a volt meter or even a simple test light you can check the voltage at the connector on the vehicle. One connector is for left signal and brake, one for right signal and brake and the last one is your running lights. If you have voltage there, your problem is on the trailer or pigtail connector, and could very likely be a bad ground or a break in that wire. You should be able to trace it all the way back to the lights.
__________________
2012 Overland, Deep Cherry w/black/saddle interior, V6, ACC pkg.

My 77 Cherokee- Long gone but not forgotten
___
____________________________________
Reply With Quote
  #4  
Old 10-18-2012, 05:12 PM
Member
My Jeep: 2012 5.7L WK2
 
Join Date: Oct 2011
Location: Avon, CT USA
Posts: 204
Thanks: 0
Thanked 5 Times in 5 Posts
Rep Power: 2240
PECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond repute
Re: trailer running lights not working

I just started having this issue, too. I thought that the problem was with my utility trailer, but I just got a boat trailer and its running lights won't come on either. Did you ever figure out the problem, windsurfnut?
__________________
2012 Jeep Grand Cherokee Overland 4x4 5.7L ORAII Mineral Gray Dark/Light Frost Beige
Reply With Quote
  #5  
Old 10-19-2012, 07:55 AM
Member
 
Join Date: Mar 2012
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1690
windsurfnut is on a distinguished road
Re: trailer running lights not working

I did. I found a blown fuse.
Reply With Quote
  #6  
Old 10-20-2012, 07:08 PM
Member
My Jeep: 2012 5.7L WK2
 
Join Date: Oct 2011
Location: Avon, CT USA
Posts: 204
Thanks: 0
Thanked 5 Times in 5 Posts
Rep Power: 2240
PECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond repute
Re: trailer running lights not working

Quote:
Originally Posted by windsurfnut View Post
I did. I found a blown fuse.
Do you happen to remember which fuse?
__________________
2012 Jeep Grand Cherokee Overland 4x4 5.7L ORAII Mineral Gray Dark/Light Frost Beige
Reply With Quote
  #7  
Old 10-20-2012, 07:16 PM
Member
My Jeep: 2012 5.7L WK2
 
Join Date: Oct 2011
Location: Avon, CT USA
Posts: 204
Thanks: 0
Thanked 5 Times in 5 Posts
Rep Power: 2240
PECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond repute
Re: trailer running lights not working

Quote:
Originally Posted by PECo View Post
Do you happen to remember which fuse?
Never mind. The manual says J14. I'll give it a shot.
__________________
2012 Jeep Grand Cherokee Overland 4x4 5.7L ORAII Mineral Gray Dark/Light Frost Beige
Reply With Quote
  #8  
Old 10-23-2012, 09:41 PM
Member
My Jeep: 2012 5.7L WK2
 
Join Date: Oct 2011
Location: Avon, CT USA
Posts: 204
Thanks: 0
Thanked 5 Times in 5 Posts
Rep Power: 2240
PECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond reputePECo has a reputation beyond repute
Re: trailer running lights not working

For anyone else who has this problem, check fuse J14 in the fusebox under the hood. The fuse locations are printed on the underside of the fusebox lid. J14 is a 20 amp female maxi fuse that protects the trailer running light circuit. Mine was blown. I replaced it and now my trailer lights work fine.
__________________
2012 Jeep Grand Cherokee Overland 4x4 5.7L ORAII Mineral Gray Dark/Light Frost Beige
Reply With Quote
  #9  
Old 05-22-2016, 10:41 AM
New Member
 
Join Date: Oct 2013
Posts: 2
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 0
helmet10 is on a distinguished road
Re: trailer running lights not working

Hey thanks. I had people honking at me all night long. J14 fuse is trailer running lights for 2011 Jeep Grand Cherokee. Found it this morning after reading this post.

Thanks!
Reply With Quote
  #10  
Old 08-10-2016, 07:04 AM
New Member
 
Join Date: Aug 2016
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Newtoojeep is on a distinguished road
Re: trailer running lights not working

I have the same problem. No running lights on 3 different trailers have brake and directional but that's it. Check all fuses and relays. The brown wire at the factory trailer plug which is your running light wire. goes from plug to a relay in a side panel in the back. Any clue why there's no power to that brown wire.
Reply With Quote
  #11  
Old 08-30-2016, 12:30 AM
New Member
 
Join Date: Aug 2016
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Whlsdn is on a distinguished road
Re: trailer running lights not working

Quote:
Originally Posted by Newtoojeep View Post
I have the same problem. No running lights on 3 different trailers have brake and directional but that's it. Check all fuses and relays. The brown wire at the factory trailer plug which is your running light wire. goes from plug to a relay in a side panel in the back. Any clue why there's no power to that brown wire.
I have the same problem with my 2016 Wrangler Rubicon! I hooked up my old trailer and discovered running lights not working. Assumed it was the old trailer, but before testing to be sure, I had to pick up a second trailer and discovered same problem with it. Jeep manual shows location of one fuse box - under the hood - no clues on what fuse to look at, of course. Inside the fuse box lid the diagram says M2 is a 20 amp for "trailer lighting." All trailer lighting? But the fuse is good.

When I called my dealer for guidance, the "one tech who might be able to answer has gone home" at 4:00 pm ...on a Monday. Guess I was talking with a service writer, but she definitely had NO CLUE.

Can anyone help?
Reply With Quote
  #12  
Old 08-31-2016, 10:52 AM
The Evil Twin's Avatar
Member
My Jeep: 2011 5.7L WK2
 
Join Date: Jan 2013
Location: Gainesville, VA
Posts: 629
Thanks: 30
Thanked 65 Times in 51 Posts
Rep Power: 440296
The Evil Twin has a reputation beyond reputeThe Evil Twin has a reputation beyond reputeThe Evil Twin has a reputation beyond reputeThe Evil Twin has a reputation beyond reputeThe Evil Twin has a reputation beyond reputeThe Evil Twin has a reputation beyond reputeThe Evil Twin has a reputation beyond reputeThe Evil Twin has a reputation beyond reputeThe Evil Twin has a reputation beyond reputeThe Evil Twin has a reputation beyond reputeThe Evil Twin has a reputation beyond repute
Garage
Re: trailer running lights not working

Quote:
Originally Posted by Whlsdn View Post
I have the same problem with my 2016 Wrangler Rubicon! I hooked up my old trailer and discovered running lights not working. Assumed it was the old trailer, but before testing to be sure, I had to pick up a second trailer and discovered same problem with it. Jeep manual shows location of one fuse box - under the hood - no clues on what fuse to look at, of course. Inside the fuse box lid the diagram says M2 is a 20 amp for "trailer lighting." All trailer lighting? But the fuse is good.

When I called my dealer for guidance, the "one tech who might be able to answer has gone home" at 4:00 pm ...on a Monday. Guess I was talking with a service writer, but she definitely had NO CLUE.

Can anyone help?
There is a relay in the TIPM that switched power on for the running (parking) lights. It is before the fuse. Pull the fuse, switch on your parking lights and use a meter to check voltage across the fuse slot. If there is no voltage then you likely have an issue with the TIPM. If you have power then the relay is fine and (if the fuse is too) the problem likely resides in wiring.
__________________

__________________
#132-Motosylum Racing

2016 Sponsors: Amsoil, SHOEI, www.DC-MOTO.net, VP Racing Fuels, www.MARRC.org
Amsoil 5w-20 synthetic meets Chrysler MS-6395 for my Jeep!
Reply With Quote
Reply

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Daytime running lights kaflyboy Trouble Shooting/Problems/Service 2 04-13-2012 02:57 PM
Daytime running lights.. bossk Grand Cherokee - WK2 - 16 09-02-2011 12:53 AM
Trailer Hitch Back Up Lights JeepCoop Off Road Modifications 17 08-25-2011 06:26 PM
Trailer signal lights not working Canyon Dancer Trouble Shooting/Problems/Service 10 10-30-2010 07:16 AM
07 WK - Right brake/running light not working?? TheAngryMinnow Grand Cherokee - WK 3 10-20-2010 11:09 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 10:36 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by FCA US LLC. Chrysler, Dodge, Jeep, Ram, Mopar and SRT are registered trademarks of FCA US LLC.