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07-22-2019, 08:10 AM
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#1
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Rivet Master
Join Date: Mar 2003
Posts: 2,190
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red light in rear window of trailer
It lights up when the umbilical cord is plugged in.
I don't understand its purpose.
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07-22-2019, 08:48 AM
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#2
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Rivet Master
Currently Looking...
Mantua
, Ohio
Join Date: Jul 2005
Posts: 7,062
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Safety, if visible from outside rear, higher that taillights.?
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07-22-2019, 10:11 AM
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#3
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4 Rivet Member
2015 28' Flying Cloud
Newtown
, Pennsylvania
Join Date: Jan 2015
Posts: 315
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Pictures?
Bruce
__________________
50 amp, Awning package
2015 Ram 2500 6.7 TD, Blue Ox 1000 lb.
400ah LiFePo4, 800 watts solar, 2x eu2000i Propane
PD9160 converter, Prosine 1800 inverter
2x Victron 100/30 Smart Solar, Victron Smart Shunt
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07-22-2019, 01:55 PM
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#4
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Rivet Master
Join Date: Mar 2003
Posts: 2,190
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no pics, it's raining
The red light is inside the trailer
At the bottom of the back window frame
It stays on as long as the trailer is plugged into the tow vehicle
Is it ungood to leave your trailer "wired up" to your trailer?
Could it be an idiot light, to warn you to unplug?
It's a 1973 trailer. Could it predate fancy brake controllers, and be a confidence light to let you know your trailer is wired up, and be visible in the rear view mirror, while you are driving?
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07-22-2019, 01:57 PM
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#5
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Rivet Master
Join Date: Mar 2003
Posts: 2,190
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It's a preowned trailer....
I mean like....I am hoping that it's not a brothel light.
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07-22-2019, 01:57 PM
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#6
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Rivet Master
Join Date: Mar 2003
Posts: 2,190
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Because
Eww
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07-22-2019, 03:35 PM
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#7
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Rivet Master
2021 33FB Classic
2019 30' Flying Cloud
Katy
, Texas
Join Date: Apr 2017
Posts: 788
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Quote:
Originally Posted by mandolindave
I mean like....I am hoping that it's not a brothel light.
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For some reason, I'm thinking about The Police right now.
Rooooooxanne...you don't have to put on the red light...
__________________
2021 Classic 33
2020 GMC 3500HD Duramax AT4
ProPride 3P
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07-28-2019, 05:03 PM
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#8
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Rivet Master
Join Date: Mar 2003
Posts: 2,190
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sorry...bumping this
got no answer
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07-28-2019, 05:09 PM
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#9
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The Aluminum Tent 3
2014 23' Flying Cloud
Park City
, Utah
Join Date: Aug 2015
Posts: 2,157
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Does it light up ONLY when plugged in to umbilical? A photo would be worth a thousand words here.
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07-28-2019, 05:14 PM
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#10
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Rivet Master
2000 25' Safari
Davidson County
, NC Highlands County, FL
Join Date: Aug 2006
Posts: 4,493
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My guess an idiot light someone added, not original. Lots of tow vehicles back in those days did not have protection to prevent the tow vehicle battery from getting drained.
My first Airstream trailer was a 73. It did not "advertise " with a red light in the evening.
ps:
If it glows with the tow vehicle's switch turned off, you've got a problem that needs fixin'.
__________________
Alan
2014 Silverado LTZ 1500 Crew Cab 5.3L maximum trailering package
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07-28-2019, 05:51 PM
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#11
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Rivet Master
2017 26' Flying Cloud
Tampa
, Florida
Join Date: Feb 2017
Posts: 7,655
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Quote:
Originally Posted by mandolindave
Could it be an idiot light, to warn you to unplug?
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I was thinking a light to warn you if you lost your connection, but wouldn't it make more sense to put it in the front window where you'd see it?
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07-28-2019, 06:08 PM
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#12
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Rivet Master
2000 25' Safari
Davidson County
, NC Highlands County, FL
Join Date: Aug 2006
Posts: 4,493
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Thinking about it further; the charge wire inside the umbilical is hot/positive all the time, fed from the house battery, regardless of being connected to the tow vehicle or not. So, how could an idiot light be wire to work only when the tow vehicle is connected.
Show us a photo!
add edit:
Another thought, it might be an idiot light to remind someone that the storage switch is in the on position. That could make the light work only when plugged in to the tow vehicle at the same time the storage switch was off.
ps:
Is the converter near the rear, in the storage area near the rear window? That location might be why the light was located in the rear window instead of the front.
__________________
Alan
2014 Silverado LTZ 1500 Crew Cab 5.3L maximum trailering package
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07-28-2019, 06:08 PM
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#13
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Rivet Master
2013 31' Classic
billings
, Montana
Join Date: Feb 2010
Posts: 3,577
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Quote:
Originally Posted by mandolindave
I mean like....I am hoping that it's not a brothel light.
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........sounds like it is...
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07-28-2019, 06:22 PM
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#14
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Rivet Master
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia
, New Mexico
Join Date: Feb 2005
Posts: 7,743
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Year and model?
__________________
Sail on silver girl. Sail on by. Your time has come to shine.
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07-29-2019, 11:07 AM
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#15
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Rivet Master
Join Date: Mar 2003
Posts: 2,190
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Don't know how much a photo will tell
It's an 1973 Argosy 20 footer. It only comes on when plugged in to the tow vehicle
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07-29-2019, 12:08 PM
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#16
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Rivet Master
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia
, New Mexico
Join Date: Feb 2005
Posts: 7,743
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I had a few 70s Airstreams but not an Argosy, although I doubt the light in the rear window is factory. My guess is it was put in as an aftermarket tail/brakelight.
It was not until later that the 7 way umbilical configuration on trailers was standardized. If the umbilical was not rewired and is in the original configuration you will get squirrely results when it is plugged into a modern tow vehicle.
__________________
Sail on silver girl. Sail on by. Your time has come to shine.
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07-29-2019, 12:49 PM
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#17
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Half a Rivet Short
2017 30' Classic
2022 Interstate 24X
Carlisle
, Pennsylvania
Join Date: May 2017
Posts: 15,742
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Hi
On a 40+ year old trailer, there's no way to know just *what* somebody may have done. You can easily pull the TV charge wire off the trailer battery and route it somewhere else. Just *why* somebody would do that .... maybe they did run a mobile brothel ....
Bob
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07-29-2019, 12:55 PM
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#18
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Rivet Master
2017 26' Flying Cloud
Tampa
, Florida
Join Date: Feb 2017
Posts: 7,655
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Quote:
Originally Posted by mandolindave
I mean like....I am hoping that it's not a brothel light.
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Quote:
Originally Posted by AstroBruce
Pictures?
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Quote:
Originally Posted by Lumatic
Year and model?
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About 25, 5' 5", red hair.....Oh, you mean the Airstream! Sorry!
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