Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-29-2016, 06:50 PM   #15
Rivet Master
 
TG Twinkie's Avatar
 
1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
Posts: 5,140
Images: 2
Blog Entries: 5
The lights are not in series. They are wired in parallel. Daisy chained just means they are all on the same circuit.
__________________

__________________
Knowledge: "A gift to be shared. A treasure to receive."
TG Twinkie is offline   Reply With Quote
Old 06-29-2016, 06:54 PM   #16
Rivet Master
 
mayco's Avatar

 
1982 31' Airstream 310
champaign , Illinois
Join Date: Jun 2013
Posts: 2,761
There ya go
__________________

__________________
mayco is offline   Reply With Quote
Old 06-29-2016, 07:41 PM   #17
3 Rivet Member
 
Burnside Bob's Avatar
 
2009 25' FB Flying Cloud
1973 31' Sovereign
Mt Angel , Oregon
Join Date: Jul 2010
Posts: 198
Quote:
Originally Posted by Soyboy View Post
I'm replacing a rear marker light on my '99 Safari. It has 2 wires coming through the body/grommet (BTW, thanks for making the wires so short Airstream ). Both of the wires run into the actual light fixture. Anyway, the light seems to be grounded to the body by the attachment screws. If so, why are there 2 wires?

One might assume that one is hot and the other is ground however they both have continuity. So does that mean they are both hot? In another thread, someone suggested (but with no clear answer/reply) that these wires might be daisy chained to run the other marker lights. Maybe so, but why would they still have continuity when they are not attached to each other (one coming from the source and the other to the lights?

Any tips for figuring out if they are both meant to be hot, with one wire coming from the source and the other running to the next light? Or if one is ground, which one is it? I am kind of leaning towards them both meaning to be hot, as there is really no need for a separate ground wire with the metal body (at leaset that's what I would assume).

Thanks

My experience may prove useful. I removed and replaced all of the marker lights in my 2009 Flying Cloud. I also replaced the wiring in the top of my trailer by removing the interior ceiling panel.

All of my clearance lights were wired with dedicated hot (green) and ground (white) 10 gauge wires, i.e. "wired in parallel". It was because they were wired with 10 gauge wire that the connectors could not be pulled thru the grommet from outside the trailer--the connectors were too fat to fit thru the grommet.

In this day and age, it is unlikely that anyone's marker lights are wired in series, also called "daisy chaining", because failure of one bulb would mean all marker lights in the series (daisy chain) would go out.

If both marker light wires are the same color, it does not matter which is connected to hot and which to ground.

Hope this helps.
__________________
Best, Burnside

"To err is human, to air is devine."
Burnside Bob is offline   Reply With Quote
Old 06-29-2016, 08:21 PM   #18
Rivet Master
 
TG Twinkie's Avatar
 
1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
Posts: 5,140
Images: 2
Blog Entries: 5
I believe the OP. is referring to the wires coming out of the coach. Not the fixture. IMHO neither should be grounded. They should be connected to the marker light. If the marker light only has 1 wire that is the +12 volt side. The marker light then has a grommet at one of the mounting holes which will complete the circuit when mounted to the skin.
If there are 2 wires in the light fixture they are as follows.
If red and black; red is + black is -
If black and white; black is + white is -
__________________
Knowledge: "A gift to be shared. A treasure to receive."
TG Twinkie is offline   Reply With Quote
Old 06-29-2016, 08:31 PM   #19
Airstream Driver
 
PeterH-Airstreamer's Avatar

 
1997 30' Excella
1983 31' Airstream310
Austin , Texas
Join Date: Feb 2002
Posts: 3,375
Images: 51
Quote:
Originally Posted by TG Twinkie View Post
I believe the OP. is referring to the wires coming out of the coach. Not the fixture. IMHO neither should be grounded. They should be connected to the marker light. If the marker light only has 1 wire that is the +12 volt side. The marker light then has a grommet at one of the mounting holes which will complete the circuit when mounted to the skin.
If there are 2 wires in the light fixture they are as follows.
If red and black; red is + black is -
If black and white; black is + white is -
on my 1997 Excella trailer they both were black. One was 12V and the other ground. Even with all the marker lights disconnected, you can not measure resistance. The tail light are in the circuit and will give wrong reading, since they are incandescent.
Best way is to jump 11 and 1 o'clock on the plug with a blade fuse and then measure which is 12v
__________________
1990 29' Excella Trailer
1996 Airstream B190
1997 30' Excella Trailer
AIR #13
PeterH-Airstreamer is offline   Reply With Quote
Old 06-29-2016, 09:10 PM   #20
Rivet Master
 
Soyboy's Avatar

 
1999 28' Excella
Frederick , Maryland
Join Date: Mar 2004
Posts: 661
Images: 41
Peter:

Thanks, I did that today and one did show 12V and the other zero. I wish I had taken notice if the other marker lights along the top were on, seems stupid, but I was so intent on measuring for voltage that I didn't notice. DUH. Since our trailers (Peter) are of the same vintage I guess then one is hot and the other ground even though Airstream had two black wires coming through the grommet to the light. I also busted into the old light fixture and I could see that one wire went to one side and the other wire to the other side, which should show that one is hot and one is ground. I'll find out for sure tomorrow, one way or the other LOL.

BTW I mentioned schematics earlier, turns out I had one for everything EXCEPT THE EXTERIOR LIGHTING. ROFLMAO.

I'll let you guys know how I make out. I really appreciate all of the input!

Trying to get things in place so we can head to the beach next week and I can watch my polished exterior corrode in front of my eyes Oh well, that is what a Cyclo is for.

Den
__________________
1999 28' Safari
2012 F150 Platinum Max Tow 7650 GVWR 3.73 Elec. Locking Diff.(Prev 2003 Dmax).
Honda EU2000i, Equalizer Hitch
AM Solar Panels 150W - 2 Trojan T 105 6V Batteries
TAC MD-6
AIR 4534

On internet forums, please research and separate the wheat from the chaff (including mine!)
Soyboy is offline   Reply With Quote
Old 06-30-2016, 02:51 PM   #21
Rivet Master
 
Soyboy's Avatar

 
1999 28' Excella
Frederick , Maryland
Join Date: Mar 2004
Posts: 661
Images: 41
Thanks again for everyone's input. I did get it squared away and working today. Like I stated before, there are two black wires coming out through the grommet. I jumped the umbilical and saw the 1. all of my lights worked, even with the one marker light disconnected. 2. With it powered up, the one wire was hot and the other was not. So I wired up the new fixture and it's all good. I did replace the steel screws that Airstream used (thanks!) with SS screws. I then went across and looked at the other two lamps. One had one SS and 1 steel so I fixed that. The last one had two steel screws that were totally rusted and were putting out a rust film that coated the inside of the fixture. Fortunately, I had another "bullseye" on hand so I removed the old one (one of the screws was so rusted I had to drill it out) and I'm replacing it with the new fixture and SS screws. I also had to clean off all of the @#$% silicone that an RV mechanic slathered around the lights in order for it to pass inspection (and for this I paid their labor rate of $100/hr. - hence why I and many of us work on our own stuff as much as possible - even if it is a learning process). Now I'm going to seal around 3 sides (not four like the RV mechanic did) of the fixtures with Acryl-R.

Thanks again,

Den
__________________

__________________
1999 28' Safari
2012 F150 Platinum Max Tow 7650 GVWR 3.73 Elec. Locking Diff.(Prev 2003 Dmax).
Honda EU2000i, Equalizer Hitch
AM Solar Panels 150W - 2 Trojan T 105 6V Batteries
TAC MD-6
AIR 4534

On internet forums, please research and separate the wheat from the chaff (including mine!)
Soyboy is offline   Reply With Quote
Reply


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
Heating and Air Cond. - Which wires are which? trekerboy Electrical - Systems, Generators, Batteries & Solar 12 08-09-2015 09:37 AM
Anyone know of LEDs for the rear marker lights on mid '70s on the tail lights? Mixter Lights - Interior & Exterior 8 11-11-2014 09:27 PM
Marker Lights how do you get to the wires? perryg114 Lights - Interior & Exterior 4 10-13-2011 08:51 PM
AC just quit working and it's Hot Hot Hot!!! SaabLover Furnaces, Heaters, Fireplaces & Air Conditioning 9 07-27-2010 10:03 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:13 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.