Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-17-2013, 07:42 PM   #1
4 Rivet Member
 
Gregsch's Avatar

 
1979 24' Airstream Excella 24
Tipp City , Ohio
Join Date: Feb 2012
Posts: 495
running lights?

I have had a leak (probably several) above the drivers seat and the passenger seat ever since I bought this MoHo. I decided to check the marker lights for leaks and maybe convert the lamps to the new LED fixtures while I am at it. I took the first one apart tonight. I think I found part of the problem. There is a 1/2" diameter hole with a wire that goes to a bolt that looks to me like it does nothing. Does anyone else have this arrangement? If so what does it do? It looks like the 1/2" hole was sealed with a big wad of caulk that has long since failed. Can I simply push the wire back into the body and seal the opening with a patch?
Attached Thumbnails
Click image for larger version

Name:	DSCI0002.JPG
Views:	74
Size:	507.1 KB
ID:	198149   Click image for larger version

Name:	DSCI0001.JPG
Views:	80
Size:	517.6 KB
ID:	198150  

Click image for larger version

Name:	DSCI0003.JPG
Views:	80
Size:	573.9 KB
ID:	198151   Click image for larger version

Name:	DSCI0004.JPG
Views:	79
Size:	550.6 KB
ID:	198152  

__________________

__________________
Gregsch is offline   Reply With Quote
Old 10-17-2013, 07:56 PM   #2
Rivet Master
 
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,591
The wire to the bolt is most likely the ground (-) wire for the marker light and you will need to have it or something like it to make the lights work.
__________________

__________________
idroba is offline   Reply With Quote
Old 10-24-2013, 09:58 PM   #3
Dazed and Confused
 
Isuzusweet's Avatar
 
Currently Looking...
1983 31' Airstream310
Hillsburgh , Ontario
Join Date: Sep 2012
Posts: 2,426
Yeah you have to love AS quality sometimes...... This is what I found under both my corner marker lamps.

Mine has a power wire attached to a terminal on the marker lamp (mine were converted to LED by a PO). The ground for the lamp is provided by the screws holding the fixture on. I filled all the holes with sikiflex 221 (or Tempro 635) and remembered to dab a bit of sealant under the mounting screw heads.
Attached Thumbnails
Click image for larger version

Name:	DSC02564.jpg
Views:	54
Size:	252.4 KB
ID:	198682  
__________________
Isuzusweet is offline   Reply With Quote
Old 10-25-2013, 12:02 AM   #4
Rivet Master
 
TG Twinkie's Avatar
 
1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
Posts: 5,140
Images: 2
Blog Entries: 5
Many marker light fixtures are connected to the common/ground with one of the mounting screws. Take note: there is usually a brass grommet in one of the mounting holes, which is attached to the bulb base in one way or another.
The skin of the trailer provides the return path, common/ground for all of the 12 volt DC devices, both inside and outside the coach.
__________________
Knowledge: "A gift to be shared. A treasure to receive."
TG Twinkie is offline   Reply With Quote
Old 11-01-2013, 07:08 PM   #5
Rivet Master
 
crazeevw's Avatar

 
1989 34.5' Airstream 345
Saint Petersburg , Florida
Join Date: Apr 2010
Posts: 1,687
Images: 28
maybe I'm just not that familiar with 12v DC systems, but can aluminum be a 'ground'?
__________________
crazeevw is offline   Reply With Quote
Old 11-01-2013, 07:27 PM   #6
jm2
Rivet Master
 
jm2's Avatar
 
2002 25' Safari
1977 20' Argosy 20
northern valley , new jersey
Join Date: Nov 2008
Posts: 530
why, yes.

iirc, among non-precious metals, aluminum comes after copper and before brass in electrical conductivity.
__________________
Joseph & Gabrielle

Simplicity is the ultimate sophistication - Leonardo da Vinci.

WBCCI 2087 - AIR 3144 - TAC-NJ2

http://defendwally.org/
jm2 is offline   Reply With Quote
Old 11-01-2013, 07:34 PM   #7
Rivet Master
 
crazeevw's Avatar

 
1989 34.5' Airstream 345
Saint Petersburg , Florida
Join Date: Apr 2010
Posts: 1,687
Images: 28
See, I DO learn something new every day! Thanks jm2
__________________
crazeevw is offline   Reply With Quote
Old 11-01-2013, 07:46 PM   #8
jm2
Rivet Master
 
jm2's Avatar
 
2002 25' Safari
1977 20' Argosy 20
northern valley , new jersey
Join Date: Nov 2008
Posts: 530
just as we learn from your many adventures, Derek!
__________________
Joseph & Gabrielle

Simplicity is the ultimate sophistication - Leonardo da Vinci.

WBCCI 2087 - AIR 3144 - TAC-NJ2

http://defendwally.org/
jm2 is offline   Reply With Quote
Old 11-01-2013, 08:15 PM   #9
Rivet Master
 
TG Twinkie's Avatar
 
1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
Posts: 5,140
Images: 2
Blog Entries: 5
It has nothing to do with aluminum being common/ground.
The steel frame of the trailer is also part of the common/ground plane. The negative wire in the UCord is connected to the steel frame of the trailer in most cases. As is the negative side of the battery in the TV.
Just as the steel or aluminum components of the TV are part of the electrical circuit on a 12 volt DC system.
In reality the negative side of the 12 volt DC circuit is not GROUNDED. It is simply the COMMON side of the 12 volt DC circuit. There by the return path for most DC devices is the metal in the trailer. It saves wire and it saves weight by literally cutting the amount of wire used in half.
The only true ground in the trailer is provided by one of two sources. You either drive a ground rod (which by the National Electric Code must be a rod 8' long made of a specific material) into the ground at your site. Or you connect the shore power cord ( properly wired) to a properly wired power source. In the latter case the utility company in effect has driven the ground rod for you.
The use of the term GROUND should have never been used for the COMMON side of a DC circuit. IMHO
__________________

__________________
Knowledge: "A gift to be shared. A treasure to receive."
TG Twinkie 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



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:40 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.