
FILE: 091-35 BATTERY SAVER.P65
4-23-2002
REV. A
INSTRUCTION MANUAL
BATTERY SAVER
POWER SUPPLY / AUTOMATIC LOAD SWITCH
MODEL #091-35
NOTE :
This Battery Saver is designed
for negative ground vehicles.
INPUT :120 volt, 50/60 Hz, 1amps
OUTPUT: 12VDC, 7 AMPERES D.C.
3 YEAR WARRANTY
KUSSMAUL ELECTRONICS CO., INC.
170 CHERRY AVE., WEST SAYVILLE, N.Y. 11796
TEL: in NY 631-567-0314 TOLL FREE: 800-346-0857 FAX: 631-567-5826

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. Be certain that adequate ventilation is available and that the unit is not subject to water
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. The installation is now complete. If done correctly, the loads should be powered from the battery
when the A.C. power OFF and from the power supply when A.C. power is ON.
TEST
To test the installation first remove A.C. power from the vehicle. Now determine that power is being
supplied to the loads. This power should be coming through the BATTERY SAVER. Disconnect
the BLUE wire input and note that the loads are deenergized. Leave the BLUE wire disconnected
and apply 120 volts A.C. power to the vehicle. This should energize the power supply and the
loads. If the loads are energized, then the power supply is functioning correctly. THE TEST IS NOW
COMPLETE. Now reconnect the BLUE wire. This is important!

INSTALLATION RECORD & WARRANTY
Date Installed
Installed By
Vehicle Identification
Vehicle Owner
W ARRANTY
All products of Kussmaul Electronics Company Inc. are warranted to
be free of defects of material or workmanship. Liability is limited to repairing or replacing at our factory, without charge, any material or defects
which become apparent in normal use within 3 years from the date the
equipment was shipped.
Kussmaul Electronics Company, Inc. shall have no liability for damages of any kind to associated equipment arising from the installation and
/or use of the Kussmaul Electronics Company, Inc. products. The purchaser, by the acceptance of the equipment, assumes all liability for any
damages which may result from its installation, use or misuse, by the
purchaser, his or its employees others.