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07-20-2015, 10:20 PM
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#1
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1 Rivet Member 
1965 17' Caravel
San Francisco
, California
Join Date: Jun 2011
Posts: 17
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Odd LED light issue -Help
I have a 65 Caravel with the original light fixtures. I have replaced the original Univolt converter with a modern power converter. The issue I am having is with the LED lights I purchased to replace the incandescent 1141 bulbs. These LEDs work in all but two fixtures.
One is the double reading light over the street-side bed, one works the other does not.
The others fixture is the 4 bulb light over the galley.
All of the LED bulbs are functioning and work in all the other fixtures. Also the incandescent bulbs work fine in the two problematic fixtures.
Any ideas on what the problem may be?
Any help is appreciated.
Sent from my iPad using Airstream Forums
__________________
Ingall Bull
1965 Airstream Caravel
2014 Jeep Cherokee Latitude
V6, Tow Group, Comfort and Convenience Group
o)))))))o
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07-20-2015, 10:38 PM
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#2
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Rivet Master 
1974 31' Sovereign
1979 23' Safari
Wayland
, New York
Join Date: Jan 2012
Posts: 1,632
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Could be polarity in the sockets. Some LEDs are polarity sensitive, incandescent aren't, so if the non working sockets are wired backwards it can keep the LEDs from working.
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07-21-2015, 06:52 AM
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#3
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"Cloudsplitter"

2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,461
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Welcome Aboard....
Some of the light fixtures on our 63 Safari had two bulbs in each, a 120vAC and a 12vDC.
Bob
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07-21-2015, 06:09 PM
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#4
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1 Rivet Member 
1965 17' Caravel
San Francisco
, California
Join Date: Jun 2011
Posts: 17
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Quote:
Originally Posted by HiJoeSilver
Could be polarity in the sockets. Some LEDs are polarity sensitive, incandescent aren't, so if the non working sockets are wired backwards it can keep the LEDs from working.
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Thanks. That may be it. Do you know the correct polarity for those single contact sockets? Is the bayonet (-) or (+)
__________________
Ingall Bull
1965 Airstream Caravel
2014 Jeep Cherokee Latitude
V6, Tow Group, Comfort and Convenience Group
o)))))))o
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07-21-2015, 06:29 PM
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#5
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Rivet Master 
2007 20' Safari
Old Orchard Beach
, Maine
Join Date: Sep 2014
Posts: 512
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Fuse?
__________________
Marty Womer
Old Orchard Beach, Maine
Trailer name: Quarantina
2019-2022 President, Northeast Mountaineers Airstream Club
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07-21-2015, 06:35 PM
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#6
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Rivet Master 
1974 31' Sovereign
1979 23' Safari
Wayland
, New York
Join Date: Jan 2012
Posts: 1,632
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Quote:
Originally Posted by iwbull
Thanks. That may be it. Do you know the correct polarity for those single contact sockets? Is the bayonet (-) or (+)
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The center post is positive, the housing is negative. Multimeter will show negative voltage if wired backward. Just make sure you have the leads straight(+&-). May want to check as mentioned some early trailers had a mix of 12v and 120v lights, but if 12v bulbs worked in them they should be 12v otherwise would have blown instantly.
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07-21-2015, 09:18 PM
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#7
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1 Rivet Member 
1965 17' Caravel
San Francisco
, California
Join Date: Jun 2011
Posts: 17
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Thanks. It's all 12v. Only plugs are 120v in the Caravel.
__________________
Ingall Bull
1965 Airstream Caravel
2014 Jeep Cherokee Latitude
V6, Tow Group, Comfort and Convenience Group
o)))))))o
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07-22-2015, 01:16 PM
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#8
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Slowpoke
2012 27' Flying Cloud
Portland
, Oregon
Join Date: Dec 2013
Posts: 255
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Have you swapped the non-working LED's into other fixtures? maybe the LED's themselves are bad?
__________________
Like the tortoise, travelin' slow with the house on our back
2012 FC27FB "Ted Zeppelin"
2010 Tundra Crewmax Platinum "Silver Rhino"
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07-22-2015, 01:29 PM
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#9
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2 Rivet Member 
2000 30' Excella
Monticello
, Florida
Join Date: Dec 2013
Posts: 88
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When I had the same problem it turned out to be the circuit breaker...open the box and look at the small buttons off to the side of the bus bar. I didn't know they even there!
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07-22-2015, 10:46 PM
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#10
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4 Rivet Member 
2009 28' International
Pacific Palisades
, California
Join Date: Dec 2009
Posts: 436
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Quote:
Originally Posted by Gnorts
Have you swapped the non-working LED's into other fixtures? maybe the LED's themselves are bad?
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It's most likely bad LED units or incorrect polarity. In our 28' International, I swapped out all of the halogens for LED's and had problems with two different light fixtures. In one case, the leads on one LED "bulb" were first backwards and inverting the bulb took care of it, but ultimately one if the heads was slightly misaligned and after inconsistent performance, I trashed it and replaced it. No problems for three years now. The other is a 20 LED bathroom fixture and one LED flickers annoyingly and intermittently. I will replace that one soon, too.
As the other party suggested, have you been able to get a different LED to work in the socket in question? And have you tried turning it 180 and reinserting to check polarity?
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07-25-2015, 11:48 AM
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#11
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Rivet Master 
Commercial Member
Currently Looking...
Denton
, North Carolina
Join Date: Jul 2006
Posts: 797
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polarity
If HiJoeSilver is right, and I think he is, all you need to do is take down the fixture and switch the two wires. That will change the polarity.
__________________
Dan Brown Denton NC
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