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Old 08-01-2013, 10:56 AM   #1
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1975 31' Sovereign
Memphis , Tennessee
Join Date: Jul 2013
Posts: 5
Wiring thermostat to Armstrong Bay Breeze A/C

There was no thermostat attached to the Bay Breeze A/C unit in my '75 Land Yacht when I purchased it. I have a replacement thermostat that I would like to install, but I am unsure of which wires go where. There are 4 wires to connect (brown, black, red, and green) to 4 points on the thermostat (Y, G, R, W), but I have no idea which go where. Thanks.

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Old 08-01-2013, 11:28 AM   #2
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1971 25' Tradewind
1993 34' Excella
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Estancia , New Mexico
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This may help:

I know red is + and Green is low fan on mine. That is where my 75 differs. Your other 2 wires have to be high fan and cool. Not sure which is which though

The original thermostat was probably a Honeywell. With a switch for 2 speeds. Other "close on rise" stats should work but will probably only be set up for one fan speed setting (3 wire).

IF you seach my threads you will find a couple of very recent ones on the subject that may be helpful

Sail on silver girl. Sail on by. Your time has come to shine.
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Old 08-03-2013, 08:30 AM   #3
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1975 31' Sovereign
Pelzer , South Carolina
Join Date: Nov 2007
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I just had to pull the bottom cover off my Armstrong, and underneath is a good schematic of the wiring
Jim in Pima Az, enjoying our 1975 31 ft Airstream Sovereign
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