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Bowmans · 08-17-2009, 04:27 PM

I couldn't find it in the service manual this time. There is a button/bumper/light (not sure) near the back of the roadside, outside shell. It is the size of a nickel and is yellow. It is shown on the service manual diagrams so I know it is original but doesn't point out what it is. Does anyone know what it is?

Funny what you notice when you polish every square inch...

Pictures below:

**Stefrobrts** · 08-17-2009, 04:44 PM

I think that lights up if you plug into a campground that has the polarity reversed. Maybe one of our electrical experts will weigh in.

Lumatic · 08-17-2009, 04:59 PM

Quote:

Originally Posted by Stefrobrts

I think that lights up if you plug into a campground that has the polarity reversed.

Ditto

A Sovereign, now that's polishin!

**Kevin245** · 08-17-2009, 05:02 PM

Yep...Polarity....

Dakota's Dad · 08-17-2009, 06:25 PM

It's in our manual.. polarity light is the correct answer.

79nTOW · 08-17-2009, 06:50 PM

It is not for polarity. It is a rear lamp monitor which uses two fiber optic tubes which will transfer light from your rear lights . One end of the glass tube is pointed at the filament of the lamp bulb and the other end is pointed toward the driver's rear view mirror. Light from the lamp filament enters the tube and travels through it to the other end so the driver sees a red glow when the lamp is functioning. This is on page 8-7 of our 1979 Airstream service manual. Ours still functions properly.

79nTOW · 08-17-2009, 06:59 PM

Oops----I think I goofed!!!!Oh well, not the first time!!

Mikethefixit · 08-17-2009, 07:34 PM

YuP Polarity Lite. 79 N Tow you are thinkin of the little fiber optic lites on the traffic side that are supposed to tell ya if the lites on the rear of the coach are workin.

Isadora · 08-17-2009, 07:57 PM

As I understand it, if the polarity is wrong it lights up to tell you. A warning light.

dghaas · 08-17-2009, 08:04 PM

I have 1975 Soverign and it has a clear button that will turn red if the polarity is wrong. My 1975 also has a set of small yellow fiber optic lites that light up when the brake lights and turn signal are working. This is something that works everytime . You can check your signal light from the drivers seat. If these little lights don't come on you know you are having a problem. I would like to see Airstream place them back on all of their trailers.

Bowmans · 08-17-2009, 08:14 PM

Thanks everyone! I was wondering where on my camper that polarity light was I read about on here so much. I thought it was inside but just hadn't found it yet.

It isn't the brake and turn light indicator but funny you came to that conclusion. My last thread was with pictures of that asking what IT was... See my ignorance here:
http://www.airforums.com/forums/f480...-it-52510.html

I need to more toroughly look through my manual next time I guess...

On the polishing, thanks for the compliment Lumatic... or was that a comment on my painful choice of polishing a 31' camper? HAHAHA! I only have about 12 foot of the roadside and the rear cap left to go on the polishing and will hopefully get it done while I am off this week if the weather cooperates.