Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-26-2013, 11:32 PM   #1
2 Rivet Member
 
Airstray's Avatar
 
2003 22' International CCD
1977 31' Excella 500
1966 26' Overlander
Shelton , Washington
Join Date: Nov 2005
Posts: 52
Images: 13
Wiring brakes

I noticed the blue brake wire as well as the large white wire go all the way to the rear of the trailer. What is the reason for this and can someone show me a wiring diagram of the blue and white wires. I assume it has something to do with the brake lights. Electricity baffles me. Thanks, Airstray
__________________

__________________
Airstray is offline   Reply With Quote
Old 09-26-2013, 11:53 PM   #2
Rivet Master
 
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,591
I believe the blue and white wires are not brake wire on your vintage units but are the charge line (+12 volts...blue) and the ground or negative wire (white). A lot of the older units had the battery in the rear compartment, and the charge lines had to run the length of the trailer. It also is used as the power for the break away switch for the brakes as well as the power wire for the electric jack.

I think, on your vintage units, yellow was the color used for the brake wires.
__________________

__________________
idroba is offline   Reply With Quote
Old 09-27-2013, 01:24 AM   #3
2 Rivet Member
 
Airstray's Avatar
 
2003 22' International CCD
1977 31' Excella 500
1966 26' Overlander
Shelton , Washington
Join Date: Nov 2005
Posts: 52
Images: 13
Brake wiring

Click image for larger version

Name:	Plug wiring modified.jpg
Views:	340
Size:	57.0 KB
ID:	196474 The blue wire is definitely the brakes
__________________
Airstray is offline   Reply With Quote
Old 09-27-2013, 04:37 AM   #4
Rivet Master
 
RM66caravel's Avatar
 
1966 17' Caravel
Newport , North Carolina
Join Date: Jan 2013
Posts: 1,286
If you are replacing the vehicle trailer wire then you are updating the connector and new wiring colors apply.
Cliff
__________________
Gotta get busy! Have a great day! Now where did I put those revits?
RM66caravel is offline   Reply With Quote
Old 09-27-2013, 08:36 AM   #5
Rivet Master
 
TG Twinkie's Avatar
 
1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
Posts: 5,139
Images: 2
Blog Entries: 5
You did not mention what year the coach is.
The color code on vintage units is not the same as the modern trailers.
__________________
Knowledge: "A gift to be shared. A treasure to receive."
TG Twinkie is offline   Reply With Quote
Old 09-27-2013, 08:54 AM   #6
Rivet Master
 
Belegedhel's Avatar
 
1973 21' Globetrotter
Houston , Texas
Join Date: Sep 2009
Posts: 2,198
Airstray,

I just went through this exercise with my '73. I recognize the diagram you posted above from eTrailer.com. This is the modern wire mapping, and it is NOT the same as a 70's vintage trailer is wired. Attached is the diagram from the '73 maintenance manual--might be the same for your '77, if that is what you are working on.
Attached Thumbnails
Click image for larger version

Name:	Airstream wiring.JPG
Views:	1046
Size:	64.2 KB
ID:	196497  
__________________
Belegedhel is offline   Reply With Quote
Old 09-27-2013, 08:34 PM   #7
Rivet Master
 
RM66caravel's Avatar
 
1966 17' Caravel
Newport , North Carolina
Join Date: Jan 2013
Posts: 1,286
Perhaps my lack of communication skills has struck again! I have removed the old wiring from my 66 added a new trailer harness and all new wiring so the pin colors on my 66 match the new 7 pin connector. It was a 6 pin cut by a po and replaced with a 4 pin. Sorry I left that part out in my reply.
Cliff
__________________
Gotta get busy! Have a great day! Now where did I put those revits?
RM66caravel is offline   Reply With Quote
Old 09-27-2013, 08:47 PM   #8
Rivet Master
 
1974 31' Sovereign
1979 23' Safari
Wayland , New York
Join Date: Jan 2012
Posts: 1,627
Images: 3
If you're working on the '77 trailer, the blue wire is the charging line that goes from the tow vehicle 12v system to the trailer battery/12v system, the white is the ground from the tv to the trailer. The brake wiring in the 77 is yellow in color. New wiring harnesses have different colors. Just going through all this on my 79, and is the same in my 74 as far as colors go. If your battery/12v pannel is in the back on your model then that's why the wires go all the way back there.
__________________
HiJoeSilver is offline   Reply With Quote
Old 09-28-2013, 01:57 AM   #9
2 Rivet Member
 
Airstray's Avatar
 
2003 22' International CCD
1977 31' Excella 500
1966 26' Overlander
Shelton , Washington
Join Date: Nov 2005
Posts: 52
Images: 13
Brake wiring

Sorry Guys I didn't give the year. I'm tracing the wiring on my 66 Overlander. Since all the wires are in the belly pan I have to resort to continuity. I have 6 wires at the rear. Blue-brakes, white-ground, red-lt. turn, green-rt turn, brown-running lights and black-12V. There is no yellow at the rear, don't know why so I'm using the red-back-up lights wire, called purple in the diagram, in place of yellow. I get continuity on all wires except the brakes. I pulled a drum to get to the brake wiring, needed packing anyhow, and the only way I get continuity at the drum is to connect the blue and white wires at the rear. So why does the brake wire travel to the rear? Airstray
__________________
Airstray is offline   Reply With Quote
Old 09-28-2013, 08:37 AM   #10
Rivet Master
 
TG Twinkie's Avatar
 
1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
Posts: 5,139
Images: 2
Blog Entries: 5
The green wire is marker/clearance lights.
There is no need to have the brake wires go to the rear of the coach.
The yellow wires should exit the belly pan near the axles.
That was the old system.
If you don't have yellow, then the blue wire is the brakes and black is the charge line. These 2 wires and the white should be larger than the rest of the wires.
__________________

__________________
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 08:41 AM.


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.