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WARNING
• PLEASE READ THESE INSTRUCTIONS COMPLETELY PRIOR TO INSTALLATION.
• BATTERIES PRODUCE EXPLOSIVE GASES – Ensure no sparks or flames are present.
• Wear eye protection.
• Vehicles must be in 'NEUTRAL' or 'PARK', park brakes 'ON'.
• Follow all vehicle manufacturers' instructions.
• Beware of moving parts.
• Voltage Sensitive Relays (VSR) are designed for negative ground alternator systems with batteries of the
same nominal voltage.
• Batteries of differing voltages cannot be used.
FEATURES
Projecta's Voltage Sensitive Relays (VSRs) are suitable for a wide variety of 12V DC applications.
VSRs sense the input voltage and automatically connect/disconnect the appliance or circuit at the set voltages.
The cut-out has an 8 sec. delay preventing the relay from disconnecting during a momentary drop in voltage.
Manual override
The VSR's manual override can be used to jumpstart your vehicle in the event of a flat starting battery.
Surge protected
Weatherproof (IP66)
L.E.D Indicator (on/contact closed)
CONTENTS:
1 x 100A Voltage Sensitive Relay
1 x 4m Battery Cable (Red)
1 x 60cm Battery Cable (Black)
1 x 2.5m Switch Cable (Blue)
1 x 1m Switch Cable (Black)
1 x Rocker Switch
6 x Small Battery Lugs
2 x Pan Head Screws
2 x Positive Battery Terminals
1 x Negative Battery Terminal
2 x Black Heat Shrink
4 x Red Heat Shrink
3 x Insulated Female Blade Terminals
1 x Insulated Male Blade Terminal
1 x Insulated Ring Terminal
1 x Wire Tap (White)
10 x Small Cable Ties
INSTALLATION
1. Disconnect the negative battery cable (Earth) from the starting battery.
Note: To prevent the loss of the vehicle's electronic memory, preset radio and security codes it is
recommended that an 'Electrical System Memory Protector' (P/No. IPS700) be used.
2. Mount the VSR in a convenient location. Mount as far away as possible from the exhaust manifold,
turbo or any other high temperature components. Do not mount on the engine.
INSTALLATION – CONNECTION
To make electrical connections, all cables need to be made to the correct length using cable lugs and
heatshrink. Cable lugs should be crimped or soldered to the stripped battery cable and then protected
with the heatshrink.
Follow the diagram below to complete the installation.
OFF
IGNITION
ACC
SWITCH
ON
RED
12V STARTING
BATTERY
NEGATIVE CHASSIS
(EARTH)
FUSE BOX
PIN CONNECTIONS
VEHICLE
FOR ROCKER SWITCH
CIRCUITS
EARTH
VSR
SUPPLY
ROCKER
SWITCH
BLUE
BLACK
ALTERNATOR
RED
12V AUXILIARY
BLUE
BATTERY
Override wire
(optional)
MAIN
AUX
VSR100
LED
BLACK
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