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Electrical
Battery/12-Volt System Information
The major portion of electrical power in your
Airstream is 12-volt� The 12-volt current powers all
gas appliances for controls and/or ignition as well as
lighting� An exception would be the range which has its
own ignition source�
All 12-volt current comes through the battery system�
The battery is accessed through a removable panel
under the front roadside cabinet of your trailer� Power
from the battery goes to a set of Type 2 thermal
breakers� The breakers are tied together by a brass
bus bar� One breaker (30-amp) protects the 12-volt
tow vehicle charge line coming from the 7-way cord�
Another breaker (20-amp) feeds the trailer brakes
breakaway switch located near the hitch coupler� A
50-amp breaker feeds the battery disconnect relay�
The current leaves the relay and travels to the 12-volt
distribution panel, located in the converter, and then to
the rest of the trailer� Open the decorative door on the
front of the converter to access the panel and its fuses�
For more information,
see Electrical Diagrams on page
8-19�
If you replace a blown fuse and it immediately blows
again, do not replace the fuse again until a qualified
service technician can correct the problem�
If the replacement fuse holds for a week or more and
the gap in the fusible metal is barely melted apart, this
usually indicates an overload condition� Reducing the
number of lights or appliances used on that particular
circuit at the same time could prevent any further fuse
failure� For important battery maintenance information,
see Batteries on page 8-10�
Battery Disconnect Switch
The battery disconnect switch is used to separate
the batteries from the 12-volt distribution panel and
converter charging system�
2024 REI Special Edition
When the switch is turned to ON and the trailer is
plugged into an external AC power source, the 12-volt
distribution panel will receive power from the converter
and the batteries will be charged through the converter
charging system�
When the switch is turned to OFF and the trailer is
plugged into an external AC power source, the 12-
volt distribution panel will still receive power from the
converter, but the batteries are disconnected from
the system� The batteries will not be drained with
the switch in the OFF position� The converter will not
charge the batteries with the switch in this position�
The charge in the 12-volt batteries can be replenished,
depending on the tow vehicle, from the tow vehicle
alternator through the 7-way cord. This charge will flow
to the batteries regardless of the battery disconnect
switch position� Likewise, if on or off, the solar panel is
still charging the batteries�
Ceiling and Directional Lighting
A wall switch just inside the door controls step, front,
rear and bathroom lights� At the rear door an adjustable
reading light has been installed and is operated by
pressing the lights lens�
Power Center
The power center houses 12-volt fuses and 120-volt
breakers accessed by opening the drop down door�
The power center's converter transforms 120-volt AC
into 12-volt DC� The converter/charging system is
the interior low voltage electrical system that enables
you to use the interior lights, fans, pumps, and 12-
volt appliances, whether operating on self-contained
battery power or 120-volt city power� The 12-volt light
Interior
5-9
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