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Interior
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
in the front of your trailer The batteries are accessible
in the battery box on the A-frame of your trailer Power
from the batteries goes to a set of four Type 2 thermal
breakers located under the front bed and riveted to the
inside skin front plate 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 Remove the false wood panel
at the bottom left side of the wardrobe to access the
panel and its fuses A 12-volt layout diagram is shown
in Section 8 - Maintenance
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
Refer to Section 8 - Maintenance for important battery
maintenance information
5-12
Converter
Parallax 5300 Power Converter
The Parallax 5300 Power Converter is located at
the bottom left side of the wardrobe behind the false
panel
Battery Disconnect Switch
The battery disconnect switch is located at the left
side wall of the galley at the entry door
The disconnect switch is used to separate the
batteries from the 12-volt distribution panel and
converter charging system
When the switch is turned to USE (on) and the
trailer is plugged into a 110-volt shoreline, 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 STORE (off) and the
trailer is plugged into a 110-volt shoreline, 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 store position The converter
will not charge the batteries with the switch in this
position
The charge in the 12-volt batteries is replenished,
when towing, 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
Classic
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