
INTRODUCTION
The BATTERY SAVER is a power supply with transfer relay. Loads connected to the BATTERY
SAVER are energized from the vehicle’s battery when the A.C. battery is OFF. As soon as A.C.
power is applied, the power supply provides 12 volts D.C. and the relay transfers the loads to the
power supply. Thus there is no drain on the battery and the entire output of the vehicle’s battery
charger is available to charge the battery.
INSTALLATION
1. Mount the BATTERY SAVER in a convenient location with 4 screws in the mounting holes
provided. Becertainthatadequateventilationisavailableandthattheunitisnot subjecttowater
damage.
2. Connect the 120 volt A.C. input power to the BATTERY SAVER through the 3 wire line cord
provided.
3. The low voltage connections are made through 3 wires.
a. Connect the BLUE wire to the vehicle’s 12 volt system
b. Connect the RED wire to the 12 volt electrical loads
c. Connect the BLACK wire to the vehicle ground or the battery (-)
4.Theinstallationisnowcomplete. Ifdonecorrectly,theloadsshouldbepoweredfromthebattery
when the A.C. power OFF and from the power supply when A.C. power is ON.
TEST
TotesttheinstallationfirstremoveA.C.powerfromthevehicle. Nowdeterminethatpowerisbeing
supplied to the loads. This power should be coming through the BATTERY SAVER. Disconnect
theBLUEwireinputandnote that the loadsaredeenergized. LeavetheBLUEwiredisconnected
and apply 120 volts A.C. power to the vehicle. This should energize the power supply and the
loads. Iftheloadsareenergized,thenthepowersupplyisfunctioningcorrectly.THETESTISNOW
COMPLETE. Now reconnect the BLUE wire. This is important!