
BOOK# 091-12HO-1
INSTRUCTION MANUAL
AUTO CHARGE 12HO
AUTOMATIC BATTERY CHARGER
MODEL #091-12HO-XX
NOTE :
This charger is designed for
vehicles with a single
battery system
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 Auto Charge 12HO is Battery Charger is a compact completely automatic charger
designed for installation on vehicles with a single battery system. Remote sensing permits
long lines between the charger and the batteries by compensating for the voltage drop in
the charging wires. An ammeter provides continuous indication of the charger output.
Construction of the Auto Charge 12HO is extremely rugged to withstand the shock and
vibration normally encountered by vehicle mounted equipment. The unit operates comÂpletely automatically and stops charging the batteries when they are fully charged. There
is no trickle charge and therefore no danger of overcharging and water boil-off. Any parasitic
loads on the battery such as radio, lights, etc., are automatically supplied with current by
the charger.
INSTALLATION
The Auto Charge 12HO Automatic Battery Charger should be installed in an area with
adequate ventilation. A power cord is supplied for connection to 115 volts 60 Hz.
1. Mount the charger using the four holes provided for this.
2. Connect the wiring from the battery to the Output Terminal Strip. Spade lugs that
have been securely crimped, or soldered, should be used.
3. Double check all wiring before proceeding.
5. Wire the A.C. power line cord to 115 volts.
6. Pilot light will light to show that the charger has power.

INSTALLATION WIRING DIAGRAM
WIRE SIZE CHART
CONNECTION ITEM DEFINITION WIRE
BAT-
BAT+
SENSE
_
SENSE
+
BATTERY
NEGATIVE
BATTERY
POSITIVE
NEGATIVE
SENSE
POSITIVE
SENSE
NEGATIVE CHARGING LEAD
FOR BATTERIES
POSITIVE CHARGING LEAD
FOR BATTERY # 1
NEGATIVE VOLTAGE SENSE
LEAD. DETECTS VOLTAGE
POSITIVE VOLTAGE SENSE
LEAD. DETECTS VOLTAGE
SIZE
12
AWG
12
AWG
16
AWG
16
AWG
IMPORTANT: Wire size is for a
maximum length of 20 feet. If wiring
is to be longer, larger wiring is
required. Additional information is
available on request.
NOTE: The sense leads must be
connected to the battery for the
charger to operate.

SPECIFICATION & OUTLINE
SPECIFICATIONS:
Input: 115V 50/60Hz, 4 amps
Output: see chart
Output Current: see chart
Charge Indicator: 0-25 amps 5%
Weight: 22 lbs
6.75
SPECIFICATION CHART
MODEL # AMPS VOLTAGE
091-12HO-6 20 6
091-12HO-12 20 12
091-11HO-24 12 24
091-12HO-32 10 32
091-12HO-36 8 36
091-12HO-48 6 48
12.00
AUTO CHARGE
12.75
4.75
9/32" DIA. 4 HOLES
4.25
OUTLINE DRAWING

INSTALLATION RECORD & WARRANTY
Date Installed
Installed By
Vehicle Identification
Vehicle Owner
WARRANTY
All product 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