Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > 5th Wheel Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 09-13-2011, 10:20 PM   #1
Junior Member
 
Djanzen's Avatar
 
Join Date: Sep 2011
Location: Saskatoon Sask, Canada
Posts: 5
tail light wiring

Hello all
two weeks ago I purchased a 2004 fleetwood prowler regal 2952b. this trailer is in incredible shape! It looks like new inside and out. but my problem is this, when the taillights are on and the brakes lights or signal lights are active, the taillights flash. first of all i will tell you guys that I am a Heavy duty Cat tech. I know about wiring! I have checked the wiring from front to rear with I magnifying glass, I have checked it with different vehicles, I have replaced the fifth wheel connector wiring with a heavy gauge seven wire cable, Every joint has been taken apart, cleaned, soldered and heat shrinked, I have installed temporary bypass wiring, I have installed a ground at each taillight,each ground wire is attached to the frame after i ground it to bare steel! I have eliminated 80 - 90 percent of the flashing, you can no longer see it in the daylight, but you can see it at night, with a multi meter is fluctuates between .3 and .6 of a volt. I am at my whits end here, no hair left on my head!!! Does anyone have any suggestions for things i have missed? my wife is telling me to let it go! YA i can't do that!! I need it to work correctly, this is a simple four wire system!!! green, brown, red, white, THAT IS ALL!
__________________

__________________
Djanzen is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 09-14-2011, 12:05 AM   #2
Senior Member
 
Monaco Owners Club
Join Date: May 2011
Location: CA
Posts: 179
Just a couple of dumb suggestions, try a different vehicle as the source, maybe it's the supply to the trailer?
Does it have the correct light bulbs? Are the bulbs solid in the sockets with good contacts? they bounce around a lot and can wear flat or get loose. also look at pin contacts on the connectors.
Hope you find it.
__________________

__________________
King Richard is offline   Reply With Quote
Old 09-14-2011, 01:04 AM   #3
Senior Member
 
Skip426's Avatar


 
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 14,970
When it comes to wiring issues I'd rather be lucky than good! 34 years automotive, taught me that.
Have you tried an external ground to the bulb it's self; touch a bare grounded wire to the exposed brass section of the bulb. Checked for an internal crossed filiment in the bulbs. Is the trailer end of the harness grounded to the hitch pin box, or right to the trailer frame ? You said you tried by-pass wiring. Did you by-pass the frame i.e. wire direct from light ground to hitch ground. When you say tail lights flash are the marker lights flashing also ?

Good luck, keep us informed if you find your solution.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 09-14-2011, 06:21 AM   #4
Junior Member
 
Djanzen's Avatar
 
Join Date: Sep 2011
Location: Saskatoon Sask, Canada
Posts: 5
Quote:
Originally Posted by King Richard View Post
Just a couple of dumb suggestions, try a different vehicle as the source, maybe it's the supply to the trailer?
Does it have the correct light bulbs? Are the bulbs solid in the sockets with good contacts? they bounce around a lot and can wear flat or get loose. also look at pin contacts on the connectors.
Hope you find it.
Yes done this
__________________
Djanzen is offline   Reply With Quote
Old 09-14-2011, 06:26 AM   #5
Junior Member
 
Djanzen's Avatar
 
Join Date: Sep 2011
Location: Saskatoon Sask, Canada
Posts: 5
Quote:
Originally Posted by Skip426 View Post
When it comes to wiring issues I'd rather be lucky than good! 34 years automotive, taught me that.
Have you tried an external ground to the bulb it's self; touch a bare grounded wire to the exposed brass section of the bulb. Checked for an internal crossed filiment in the bulbs. Is the trailer end of the harness grounded to the hitch pin box, or right to the trailer frame ? You said you tried by-pass wiring. Did you by-pass the frame i.e. wire direct from light ground to hitch ground. When you say tail lights flash are the marker lights flashing also ?

Good luck, keep us informed if you find your solution.
I have done external grounding, blubs have been replaced with new ones, and I should clarify it is the taillights have three 1157 bulbs two are wiring for taillights and signal/brake one is just tail, It is taillights and markers that flash
__________________
Djanzen is offline   Reply With Quote
Old 09-14-2011, 06:54 AM   #6
Senior Member
 
Franka548's Avatar
 
Freightliner Owners Club
Retired Fire Service RVer's
Join Date: Apr 2011
Location: N E Ohio
Posts: 3,448
Djanzen,
With the markers flashing with the signal/brake feed, that is the definite sign of a ground problem. Did you check the ground on the TV? Try a different TV. I have had similar problems due to corrosion and/or broken wires on the TV plug. I feel your frustration.

Frank
__________________
05 Alfa Gold 40' Motor Home "Goldie" 03 Malibu Toad towing 4 down
03 Silverado cclb 3500 drw, D/A, Reese 22k hitch
07 Alfa SeeYa Gold 30RL,2 slides,power everything Above for sale PM me for details
Franka548 is offline   Reply With Quote
Old 09-14-2011, 07:52 AM   #7
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
It does sound like a ground problem. They can and will do weird things. I think you may have already checked it, but put a driver to all the tail and turn signal external light housings/fixtures, paying attention to what the lights do with each one. Don't just tighten, loosen and tighten.
__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner is offline   Reply With Quote
Old 09-14-2011, 08:35 AM   #8
Senior Member
 
Join Date: Feb 2011
Posts: 123
Having done Troubleshooting on all sorts of Electronics and Vehicles, I years ago adopted strategies I called 'Troubleshooting 101'. It's the extremely rigorous application of small step Tests that assume nothing, and overlook nothing. Sometimes, a Notepad is handy to keep track of steps taken, especially in the likely case of being interrupted.

1. With the TV unplugged, I would use an Ohmmeter to check all connections. I would also look for any sort of resistance or crossfeed between 2 Filaments that ought not to be interconnected. If the TV Flasher sees 2 Filaments connected improperly in parallel [together], some Flashers will act 'strange', due to this unexpectedly-high resistance of 2 Filaments vs. the expected 1 Filament.

2. I would then look for resistances to Ground from the Ground connection at each Bulb location. I had a weird one on my 15' TT. The Running Light worked fine, but a Turn Signal at the rear did not. As first, I assumed 'Ground is Ground', right? Well, a false assumption. The lil Brass Rivet inside the Taillight Assembly connected dissimilar metals together. When I buffed it up with 'Scotchbrite', the problem disappeared. It made no sense 'logically', but rigorous Troubleshooting - assuming nothing - saved the day. If it is a bad Taillight Ground, as my pal also had on his 15' '88 Fleetwood, this method will find it.

3. Take the variable of the TV out of the equation. Use a spare Battery or Charger/Power Supply and some clips to safely make connections to the Trailer Lamps via the Harness.

4. The usual Factory technique is to connect the first Running Light. The +12 Lead goes in-and-out of that Light to the next one. And so on... Those connections are notorious for becoming intermittent. With Long Nose Pliers, carefully pull loose those connections inside the Running Light and reseat them. Look for little loose wire strands shorting out, and/or clip them off in a 'blind faith' move. I use a little Scotchbrite to scour inside the Bulb Socket, and to burnish the little Tabs on the side and the bottom of the Bulbs. Ya never know...

5. To isolate the problem, you sometimes have to resort to disconnecting Lamps one-at-a-time. This will steer you to where the problem Ground is, etc..

6. After you believe you've found the problem, connect the TV back up and see if it's truly fixed. A Power Supply puts out more current - and overcomes high resistance problems - more so than a TV Flasher run through potentially-undersized Wiring. But, in this step, you'll learn if it's an 'interactive' problem between the TT and TV.

I read the OP several times. Just skip any suggested steps here that repeat what you've already done. The hard reality is that something is still intermittent/interconnected.

My hunch, too, is that it's a Grounding issue. However, I set my own hunches aside to apply Troubleshooting rigor mercilessly.
__________________
Engineer Guy is offline   Reply With Quote
Old 09-14-2011, 06:42 PM   #9
Junior Member
 
Djanzen's Avatar
 
Join Date: Sep 2011
Location: Saskatoon Sask, Canada
Posts: 5
Quote:
Originally Posted by Engineer Guy View Post



2. I would then look for resistances to Ground from the Ground connection at each Bulb location. I had a weird one on my 15' TT. The Running Light worked fine, but a Turn Signal at the rear did not. As first, I assumed 'Ground is Ground', right? Well, a false assumption. The lil Brass Rivet inside the Taillight Assembly connected dissimilar metals together. When I buffed it up with 'Scotchbrite', the problem disappeared. It made no sense 'logically', but rigorous Troubleshooting - assuming nothing - saved the day. If it is a bad Taillight Ground, as my pal also had on his 15' '88 Fleetwood, this method will find it.
This is the only thing that i have not done, I will do this tonight and give it a try.
__________________
TV 2003 F250 SD Fifth Wheel 2004 Fleetwood Prowler Regal
Djanzen is offline   Reply With Quote
Old 09-14-2011, 06:53 PM   #10
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
Quote:
Originally Posted by Djanzen View Post
This is the only thing that i have not done, I will do this tonight a try.
Not that is mattered, but I just found a table lamp socket with this condition. Didn't make a difference in the lamp. I was just testing the ohm zero reading on my new Fluke.
__________________

__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner is offline   Reply With Quote
Reply

Tags
wiring



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
2008 HR Vacationer UFO Chassis Tail Light coachmanrvr Monaco Owner's Forum 7 02-16-2011 01:00 PM
Broken tail light Alpiner Alpine Coach Owner's Forum 3 03-27-2010 09:24 AM
2004 36' Alpine Coach Tail Light Lens SusieBee Alpine Coach Owner's Forum 9 10-30-2009 07:24 PM
Alpine Coach tail light lens info mythplaced Alpine Coach Owner's Forum 9 08-11-2009 11:05 AM
Tail light / Brake light issue... Richard 34A Winnebago Industries Owner's Forum 8 07-15-2008 06:59 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:58 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.