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Old 08-26-2014, 06:16 PM   #1
1 Rivet Member
1993 29' Excella
Austin , Texas
Join Date: Aug 2014
Posts: 14
Excella Mystery Wire

My 1993 Excella has an extra pink wire in the area where the wire bundle passes thru the floor to places beyond. It appears to have been abandoned by the PO, but I'm not yet sure because things are somewhat disassembled in that area. The wiring diagram in my manual lists 2 pink wires, one for the vent hood area, and one for the furnace. I found both intact and hot at the furnace and hood ends. Tracing the mystery pink wire up the wall reveals it joining a dozen other wires into the wall, which looks like it's never been disassembled. Anyone know what the mystery pink wire might be for?


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Old 08-26-2014, 11:12 PM   #2
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1999 34' Excella
Currently Looking...
Hillsboro , Texas
Join Date: Feb 2013
Posts: 6,073
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Is there voltage on the wire?

If not, check 'continuity' from the wire to 'ground'... is there 'continuity'? If 'yes', the wire is connected to a device in the AS... somewhere, OR, it is 'shorted' to ground...

If you disconnect ALL power... then connect a small AA battery to the wire, you can connect the other end of the battery to a longer wire to extend to another connection in the trailer to test for 'continuity' with a tester or VOM.

Do NOT connect your 12 VDC battery or converter to this wire ... if unfused and it shorts out, you will find where it went.... just follow the magic smoke..

Peace and Blessings..
WBCCI# 30676
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Old 08-27-2014, 09:17 AM   #3
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1995 30' Excella
Bowie , Maryland
Join Date: Apr 2005
Posts: 2,344
I started a thread about this same wire two or three weeks ago. I didn't bother checking into whether it had power. My theory was that it was a wire originally intended for the light on the jack, but Airstream instead decided to use the jack power wire instead and just left the wire in place.

Here is my thread.
1995 Airstream Classic 30' Excella 1000
2014 Ram 2500 Crew Cab with Cummins 6.7L Diesel

Sold but not forgotten: 1991 Airstream B190
Sold: 2006 F-250 6.0L Powerstroke Supercab
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Old 08-28-2014, 07:28 AM   #4
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1993 29' Excella
Austin , Texas
Join Date: Aug 2014
Posts: 14
I saw that post, but my wire has no green stripe. It is not hot, but the end looks used, as though it fatigued loose from a connector. Can't find a spot that it might have come from, though. I'll follow CWF's advice and keep doing the traditional tests to see if I can figure it out. If at some point in the reassembly of my unit I find something not working, I'll probably have my answer. If not, I'll cap it and leave well enough alone. Thanks for your input!!

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