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Wiring
Important notes on wiring
• See the section “Important” for installation precautions.
• Before wiring, turn off your vehicle engine and disconnect the negative terminal on
the start battery and second battery. Connect to 12V batteries only.
• Make sure all cables are securely connected to ensure safety.
Second
battery
Alternator
Ground
Accessories
(stereo, lights, etc.)
START BATT
ISO140 isolator
SECOND BATT
1
2
3
4
Battery
charger
Start
battery
The power source for both
batteries can be either
your vehicle alternator or
an optional battery charger
installed on the side of the
second battery.
Preparation: On the side covers at the bottom of the isolator, locate and select three
hole marks out of eight depending on your specic cable routing. Then use a proper
cutter tool to break the holes of a proper size through the covers so that three cables
connected can be routed out of the isolator housing when mounting.
To prevent ingress of liquids and solid particles through the perforated holes, make
sure the holes cut are suitably small and properly sealed.
1. Connect your second battery to the isolator.
Using the supplied red cable (14”/350 mm) with two lug connectors, connect the
positive terminal on the second battery to the terminal stud marked “SECOND
BATT“ on the bottom of the isolator. Remember to secure the cable on the stud
using a supplied washer and nut.
3
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