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12-13-2012, 06:29 AM
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#1
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2 Rivet Member
1966 20' Globetrotter
1966 20' Globetrotter
johnsoncity
, Tennessee
Join Date: Feb 2009
Posts: 85
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Running light problem need help.
I was ckecking out my running lights (jumper at eleven and one) no tow vehicle hooked up. All lights working except one. while working on the one light i shorted the wire.blew a fuse. Replaced blown fuse,still no lights.
Not very good on elec. Can someone give me a direction.
1966 Globe Globe Trotter
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12-13-2012, 06:38 AM
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#2
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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Just my experience with our 63 Safari.....
Intermittent tear drops.....bad grounds, corroded bulb sockets. Cleaned/replaced all mount/ground screws replaced with stainless. Treated the bulb contacts, sockets and threads with dielectric grease.
POI.......all screws were very corroded and needed to be treated with penetrant before removing.....carefully.
Bob
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12-13-2012, 06:39 AM
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#3
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Rivet Master
1972 31' Sovereign
Lexington
, Minnesota
Join Date: Feb 2009
Posts: 3,991
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Which fuse did you replace? Do you still have 12 volts at the umbilical cord? Pin number 4 (the one at 1 o'clock).
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12-13-2012, 07:25 AM
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#4
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2 Rivet Member
1966 20' Globetrotter
1966 20' Globetrotter
johnsoncity
, Tennessee
Join Date: Feb 2009
Posts: 85
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No power at charge line (1 o'clock) Replaced fuse on Neg. to Neg. at fuse block. Checked all other fuses, at fuse box and converter.
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12-13-2012, 08:16 AM
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#5
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Rivet Master
1966 22' Safari
Hilltop Lakes
, Texas
Join Date: Jun 2008
Posts: 1,767
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Check the wiring
When we had a running light problem on our trailer about a year ago, the trouble turned out to be the wires inside the walls of the trailer. Someone had installed wiring that was too small for the load of the 5 incandescent running lights across the front of the trailer.
It is possible to enlarge the hole in the aluminum skin (in the area that will be covered by the running light when it is reinstalled) enough to pull the wire through. Ours had totally fried insulation--wonder why we didn't have a fire.
It is also possible to fish in new wire through holes under the running light bases (none larger than a nickel).
See pictures of the old, bad wire in my thread starting 1/02/12 in the Lighting section of the Electrical Forums. I want to post a link here, but not sure I know how.
Good luck!
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12-13-2012, 11:11 AM
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#6
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2 Rivet Member
1966 20' Globetrotter
1966 20' Globetrotter
johnsoncity
, Tennessee
Join Date: Feb 2009
Posts: 85
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Thanks for all of you that have responded. Light were all working fine until i shorted one. Peplaced blown fuse (neg to Neg) checked all remaining fuses (good). all lights are relative new. Just do not have power on charge line ( 1'oclock on cord)
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12-13-2012, 11:44 AM
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#7
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Rivet Master
1972 31' Sovereign
Lexington
, Minnesota
Join Date: Feb 2009
Posts: 3,991
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Do you have 12 volts other places in the trailer? For example, do your interior lights work? If yes, then you probably have an in-line fuse on the battery wire in the umbilical cord that's blown. Tricky part might be finding it.
Don't just do a visual check on a fuse - check it with an ohm meter if you have one.
Chris
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12-13-2012, 03:14 PM
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#8
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Rivet Master
1988 32' Excella
Robbinsville
, New Jersey
Join Date: May 2012
Posts: 3,165
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Quote:
Originally Posted by Minno
Don't just do a visual check on a fuse - check it with an ohm meter if you have one.
Chris
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That's a good point but might not be enough I have heard of fuses and connections that read good with a meter but failed with any load.
Star checking for 12V at battery then at each end of the fuse then work your way till you can't find it. I recently worked on a trailer were the piece that holds the fuse had a bad connection to the fuse box.
By the way this is NOT a running light problem, it is a 12v charge line problem since if you hookup to your TV the problem you are having wont keep the running lights from working.
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12-13-2012, 03:35 PM
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#9
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2 Rivet Member
1966 20' Globetrotter
1966 20' Globetrotter
johnsoncity
, Tennessee
Join Date: Feb 2009
Posts: 85
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Thanks again for the replys.
Yes my interior lights work on 12 volts.
If i am hooked up to my TV will i still charge my Battery when towing.
Will check for inline fuses tomorrow.
Checked all fuses with a continuty tester- all checked good
Have power on both sides of fuses at fuse panel
Will keep looking
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12-14-2012, 05:09 AM
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#10
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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Quote:
Originally Posted by donh1
Thanks again for the replys.
Yes my interior lights work on 12 volts.
If i am hooked up to my TV will i still charge my Battery when towing.
Will check for inline fuses tomorrow.
Checked all fuses with a continuty tester- all checked good
Have power on both sides of fuses at fuse panel
Will keep looking
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don,
Have you checked your charge line when hooked-up?
Check for power on the TV side and then on the trailer side using a test light, with and without a jumper ground wire running from a good ground on the TV to one on the trailer frame.
Bob
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12-14-2012, 06:41 AM
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#11
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Rivet Master
1972 31' Sovereign
Lexington
, Minnesota
Join Date: Feb 2009
Posts: 3,991
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Quote:
Originally Posted by donh1
If i am hooked up to my TV will i still charge my Battery when towing.
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Nope. Right now you have a disconnect between the battery in your trailer and the umbilical cord. So, the TV will not be able to charge the battery until you get it fixed.
The umbilical cord should be connected to the rest of the trailer wiring inside the front wall, with access inside the trailer. It may be under a cover on the interior wall. There may be a fuse block there or an in-line fuse for the battery charge line on the umbilical cord. If nothing else, it'll give you another spot to check for 12 volts and help isolate the problem.
Ask questions and post pictures if you need additional help, especially if you're not sure what something is.
Good luck!
Chris
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12-14-2012, 08:06 AM
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#12
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RV Fixer
Currently Looking...
2013 Interstate Coach
Corpus Christi
, Texas
Join Date: Nov 2012
Posts: 24
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What you have on the charge line may not be a fuse, per se, look for the little box breaker with two posts, test light will only help you if you disconnect positive battery cable.
You most likely will find breaker where pigtail terminates, joins to trailer harness.
Try and find it, measure volts both sides when plugged to TV......TV side at 13.5 or more???
__________________
May the trails you travel always be smooth, and the sun shine favorably!!
Wickedrevs
www.allritervcenter.com
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12-14-2012, 10:56 AM
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#13
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2 Rivet Member
1966 20' Globetrotter
1966 20' Globetrotter
johnsoncity
, Tennessee
Join Date: Feb 2009
Posts: 85
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Have traced wire from fuse box to where trailer wires hook to the umbilical cord. (have power to this point), cannot find a fuse or other devise at this point. Wire from fuse box hooks straight to umbilical cord black wire,but no power at hook up end of umbilical cord. Problem must be in umbilical cord.( molded end) cannot seperate.
Thanks again for all the responce.
Don
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12-14-2012, 11:06 AM
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#14
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RV Fixer
Currently Looking...
2013 Interstate Coach
Corpus Christi
, Texas
Join Date: Nov 2012
Posts: 24
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ok Don,
go down to RV shop, get a new "RV7" 7 wire plug-- they should also give you the wiring schematic-- apparently your contact inside the molded plug is burned off, [common enough issue] -- take care and do it neat inside--- get a quality fitting [cheap is NOT BETTER] if this is more than you want to handle the RV shop should charge you half hour labor for the task.....
if you were close to me I would run out and do it for ya!!-- see it every week....well, maybe not that often, but quite a few "molded ends" fail, shore lines especially-- good luck, now you know where the failure is at least....
__________________
May the trails you travel always be smooth, and the sun shine favorably!!
Wickedrevs
www.allritervcenter.com
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12-14-2012, 11:13 AM
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#15
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2 Rivet Member
1966 20' Globetrotter
1966 20' Globetrotter
johnsoncity
, Tennessee
Join Date: Feb 2009
Posts: 85
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Thanks Wickedrevs, I can handle the replacement end install, but if you were here, i would gladly let you do the work. Have a great week-end, and Merry Christmas to everyone.
Don
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12-14-2012, 07:17 PM
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#16
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2 Rivet Member
1966 20' Globetrotter
1966 20' Globetrotter
johnsoncity
, Tennessee
Join Date: Feb 2009
Posts: 85
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Minno thanks,your direction and instructions were very helpful.
Don
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12-14-2012, 09:27 PM
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#17
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Rivet Master
Currently Looking...
Sioux Falls
, South Dakota
Join Date: Jun 2010
Posts: 2,403
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I use a 7-way tester
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12-15-2012, 02:23 AM
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#18
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RV Fixer
Currently Looking...
2013 Interstate Coach
Corpus Christi
, Texas
Join Date: Nov 2012
Posts: 24
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I built one that tests the trailer, not the TV......easy, about $20 in parts...
__________________
May the trails you travel always be smooth, and the sun shine favorably!!
Wickedrevs
www.allritervcenter.com
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