Reply
 
Thread Tools Search this Thread Display Modes
 
Old 04-07-2015, 11:21 AM   #1
Rivet Master
 
ALANSD's Avatar

 
1966 26' Overlander
Woodstock , Georgia
Join Date: Feb 2002
Posts: 8,475
Umbilical Issue

Just installed A 4 PIN TO 7 pin plug for the 7 pin on my AS. The 4 pin is the standard on Ford Trucks from 2006. The blue brake power cord was there and I spliced it onto the blue 7 pin connector. I also grounded the white wire to the truck.

I have power in the 4 pin as tested. I seem to have power in the 7 pin part as my volt meter reads 12v across the connectors.

My umbilical will light up the trailer lights when a fuse is placed across the connectors while the trailer is on shore power.

BUT - I have no lights or brake connection when the umbilical is plugged into the truck end.

What the heck can this be? I opened up the trailer wire compartment and all is well. Cleaned the connections to be sure.

Cleaned all connection plates on the trailer umbilical with contact spray and a small screwdriver.

Help me troubleshoot this please!
__________________

__________________
1966 Overlander
AIR #005
Please visit our blogs and web pages:
OUR AIRSTREAM PASSION! BLOG
RESTORING AN AIRSTREAM
Our AIRSTREAM and TIN CAN TOURIST Rallys
ALANSD is offline   Reply With Quote
Old 04-07-2015, 02:40 PM   #2
Rivet Master
 
ALANSD's Avatar

 
1966 26' Overlander
Woodstock , Georgia
Join Date: Feb 2002
Posts: 8,475
Bought a set of portable trailer lights so at least I can to the AS to a hitch place,,,
__________________

__________________
1966 Overlander
AIR #005
Please visit our blogs and web pages:
OUR AIRSTREAM PASSION! BLOG
RESTORING AN AIRSTREAM
Our AIRSTREAM and TIN CAN TOURIST Rallys
ALANSD is offline   Reply With Quote
Old 04-07-2015, 02:44 PM   #3
Rivet Master
 
Melody Ranch's Avatar
 
1956 22' Flying Cloud
1953 32' Liner
1955 22' Safari
Valley View , Texas
Join Date: Jan 2006
Posts: 3,966
Images: 78
Send a message via Skype™ to Melody Ranch
The blue is notorious for being non standard. Be careful that your brakes don't apply when your lights are on. As a suggestion...just have the truck switched over to a seven pin system...like new and like all bigger trailers would use.
__________________
"If it can't be reduced, reused, repaired, rebuilt, refurbished, refinished, resold, recycled or composted
then it should be restricted, redesigned or removed from production."
Melody Ranch is offline   Reply With Quote
Old 04-07-2015, 02:52 PM   #4
Rivet Master
 
Minno's Avatar

 
1972 31' Sovereign
Lexington , Minnesota
Join Date: Feb 2009
Posts: 3,330
A four pin trailer connector does not have a brake wire. It should have ground, left tail/stop light, right tail/stop light, and running lights.

Back in 66, Airstream did not follow the current standard pin-out for the umbilical connector. You most likely have a miss-match on the pin-outs.

Here's a link to some wiring diagrams: Trailer Wiring Diagrams | etrailer.com

Good luck!
Chris
__________________
Minno is offline   Reply With Quote
Old 04-07-2015, 03:03 PM   #5
Rivet Master
 
BambiTex's Avatar
 
1967 26' Overlander
1955 22' Flying Cloud
1964 17' Bambi II
Clear Lake Shores , Texas
Join Date: Nov 2013
Posts: 1,175
I had a similar problem. Ended up replacing the 7 pin cord end on the AS and spliced each wire after testing to ensure they matched the TV. You cannot go by the colors as they were non-standard back in the 60's.
__________________
BambiTex is offline   Reply With Quote
Old 04-07-2015, 03:10 PM   #6
Rivet Master
 
1976 31' Sovereign
Oswego , Illinois
Join Date: Jan 2007
Posts: 1,340
Blog Entries: 1
Smile umbilcal cord

Quote:
Originally Posted by BambiTex View Post
I had a similar problem. Ended up replacing the 7 pin cord end on the AS and spliced each wire after testing to ensure they matched the TV. You cannot go by the colors as they were non-standard back in the 60's.
Also 70s AS non standard wiring. Bill
__________________
featherbedder is offline   Reply With Quote
Old 04-07-2015, 05:03 PM   #7
Rivet Master
 
ALANSD's Avatar

 
1966 26' Overlander
Woodstock , Georgia
Join Date: Feb 2002
Posts: 8,475
got it and everything works. It was a bad ground. Had to drill a new hole and insert a screw for the ground wire to go onto. Many hours of frustration solved by a simple re-ground. AHHHH..now off to our rally.
__________________
1966 Overlander
AIR #005
Please visit our blogs and web pages:
OUR AIRSTREAM PASSION! BLOG
RESTORING AN AIRSTREAM
Our AIRSTREAM and TIN CAN TOURIST Rallys
ALANSD is offline   Reply With Quote
Old 04-07-2015, 06:56 PM   #8
Be Calm, Have a Cupcake
 
Secguru's Avatar
 
Vintage Kin Owner
Houston , Texas
Join Date: Nov 2007
Posts: 223
Images: 1
Caution! The 4-pin plug does not support trailer brakes. It cannot be configured to support trailer brakes. It does not have enough current carrying capacity to operate the brakes on an Airstream.

This is a disaster waiting for the first hard braking event.
__________________
Secguru

Would you rather have a mansion full of money or a trailer full of love?
Secguru is offline   Reply With Quote
Old 04-08-2015, 07:24 AM   #9
Rivet Master
 
BambiTex's Avatar
 
1967 26' Overlander
1955 22' Flying Cloud
1964 17' Bambi II
Clear Lake Shores , Texas
Join Date: Nov 2013
Posts: 1,175
Sounds like he found a brake power wire:
The blue brake power cord was there and I spliced it onto the blue 7 pin connector.
__________________
BambiTex is offline   Reply With Quote
Old 04-08-2015, 07:31 AM   #10
Rivet Master
 
ALANSD's Avatar

 
1966 26' Overlander
Woodstock , Georgia
Join Date: Feb 2002
Posts: 8,475
yes the blue cord was wrapped and right next to the 4 pin factory connector. The problem was the powder coated surfaces did not make for a good ground. Once I drilled thru,,well it all works now. The Expedition also had the brake controller connector ready to be plugged into. The harder part was finding a good spot to mount the Prodigy.
__________________
1966 Overlander
AIR #005
Please visit our blogs and web pages:
OUR AIRSTREAM PASSION! BLOG
RESTORING AN AIRSTREAM
Our AIRSTREAM and TIN CAN TOURIST Rallys
ALANSD is offline   Reply With Quote
Old 04-08-2015, 08:06 AM   #11
Rivet Master
 
BambiTex's Avatar
 
1967 26' Overlander
1955 22' Flying Cloud
1964 17' Bambi II
Clear Lake Shores , Texas
Join Date: Nov 2013
Posts: 1,175
Cool.
My new F150 has an integrated brake controller from the factory. One less thing to add :-)
__________________

__________________
BambiTex 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
Furnace issue turns out to be AS issue 92landyacht Land Yacht/Legacy Motorhomes 16 01-20-2016 11:19 PM
Trailer Umbilical Wiring pfay Lights - Interior & Exterior 6 06-09-2013 01:48 PM
Umbilical Wiring Diagrams thenewkid64 Towing, Tow Vehicles & Hitches 14 03-31-2009 01:03 AM
Rewiring Trailer Umbilical Plug DPeakMD Electrical - Systems, Generators, Batteries & Solar 4 02-29-2004 06:40 PM
Crushed Umbilical heyskipper Lights - Interior & Exterior 3 02-23-2003 09:23 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:54 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.

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