Sunline RV Forum
Sunline User Photos

Go Back   Sunline Coach Owner's Club > Model Specific Forums > Sunline Travel Trailers
Click Here to Login

Join Sunline Club Forums Today

Thread Tools Search this Thread Display Modes
Old 01-28-2016, 08:09 AM   #1
Junior Member
Join Date: Jan 2016
Location: Alaska
Posts: 1
SUN #8074
dbwoods1008 is an unknown quantity at this point
1986 sunline satellite travel trailer having issues with wiring

would like to know if anyone on here can help me, trying to fix right side running and back lights. left side works good but nothing on right side.

dbwoods1008 is offline   Reply With Quote
Old 01-29-2016, 05:58 PM   #2
JohnB's Avatar
Join Date: Nov 2006
Location: Ohio
Posts: 10,272
SUN #89
JohnB is on a distinguished road

I moved your reply to a post of your own to help get better viability for help.

What you are describing sounds like either the ground or the hot wire to the right side is disconnected or corroded. They loop these in a light to light fashion so if the first set in the chain unhooks the rest do too.

Now to find the problem... The ground may be the easier place to start. If you take a piece of wire and attached it to a good frame ground then make it long enough to reach to a right side clearance light. This is a test wire, hangs out in the open. Then take the lens off and touch the wire to the ground side of the light. If it works, you know you are fighting a ground problem and have to figure out where it is being lost.

Is that does not do it, then you need to sort out the same thing with the hot wire hooked to a positive power source. Like the camper battery. There is a risk with this on hot wire off the battery. You really do not know if the light chain hot wire side of the lights is crossed to ground. If it is, when you touch with with a live hot wire to the lights hot side, it may be a dead short if that wire is ground. If you have a fused in your test wire, that will create some protection. If you have an ohm meter and take all the bulbs out, then you can test if the lights hot side is connected to anything. If you leave the bulbs in, you will can be measuring the resistance of the bulb and get a false signal.

Hope this helps.


Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC

Google Custom Search For Sunline Owners Club
JohnB is online now   Reply With Quote
Old 02-01-2016, 08:04 PM   #3
Senior Member
Gene's Avatar
Join Date: Jan 2009
Location: Rhode Island
Posts: 1,515
SUN #768
Gene is an unknown quantity at this point
Good advice from John (as usual )

Since these are the running lights they all get power through the 7 pin plug from the tow vehicle. I don't know if the feed is split to feed each side or if the feed goes down one side and then accross the back and up the other side. If it is one continuous feed then the place to look is at the last GOOD light in the chain. The wire that feeds the rest of the chain may be broken at that point.

Gene & DW Ginny
2002 Sunline T-2363
2008 Toyota 4-runner 4wd 4.7L V-8
Reese Dual Cam straightline - P3 Brake controller
Gene is offline   Reply With Quote
Old 02-02-2016, 08:52 AM   #4
Senior Member
Join Date: Apr 2011
Location: Maine
Posts: 3,022
SUN #2097
mainah is an unknown quantity at this point
Often you'll find connections behind the tail light assembly that go from sided to side.
mainah is offline   Reply With Quote
Old 05-16-2016, 03:25 AM   #5
Junior Member
Join Date: May 2016
Location: Michigan
Posts: 2
SUN #8331
87 Sunline is an unknown quantity at this point
With it being an 86, check for corrosion or oxidation at all external lights. I have found this same issue on my 87. Bit of a pain in the butt tracking it down. Have a multimeter handy too.
87 Sunline is offline   Reply With Quote
Old 05-16-2016, 07:17 AM   #6
Senior Member
Join Date: Apr 2011
Location: Maine
Posts: 3,022
SUN #2097
mainah is an unknown quantity at this point
The lighting makes a home run with both the grounds and the hot wire both sides so yes if you have a ground issue it is possible to loose one side.

mainah is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
85 Sunline interior lights wiring issues morbidcb Repairs and Maintenance 9 06-20-2015 09:47 AM
1987 Sunline Saturn 16' travel trailer pigtail wiring diagram Gaterader Repairs and Maintenance 15 09-15-2013 08:25 AM
Having Trouble with Slide Room on a 2000 Sunline littlefoot Sunline Community 6 05-13-2012 03:43 PM
Need Slide room info having problem RootyC Modifications 2 03-30-2007 01:10 PM

» Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by Sunline RV or any of its affiliates. This is an independent, unofficial site.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:53 AM.