Connecting to Power
WARNING
The wiring (not included) from the power source to the positive terminal of the Garmin Boat Switch device must
run through a 50 A circuit breaker or in-line fuse (not included) as close to the power source as possible. You
must connect the positive wire to the fuse or circuit breaker. Connecting the device to power without a circuit
breaker or in-line fuse may cause a fire if there is a short in the cable, resulting in property damage and/or
serious personal injury.
• If the device is powered by a battery, use a circuit breaker or fuse rated to protect a cable of the gauge used
to connect the device to the battery. See the ABYC or your local and regional standards for the required fuse
or breaker rating.
• If the device is powered by a source other than a battery, use a circuit breaker or fuse rated to the lower of 50
A or the maximum current of the power source.
CAUTION
A power cable is not provided with this device. You must use 6 AWG marine-grade, fully-tinned copper wire with
insulation rated for 105°C (221°F) to connect the device to power and to ground for most installations. For long
wire runs, you should consider using larger-diameter (smaller gauge number) wire to minimize power loss.
Using the improper wire gauge for the power cable can result in damage to the device, the wiring, and the vessel,
as well as causing personal injury.
You should refer to ABYC or your local and regional standards when determining the maximum length and
gauge of wire extensions.
NOTICE
The total maximum output of the Garmin Boat Switch device is 50 A.
Power is supplied to the device through two M6 bolt terminals. You must connect the power and ground wires
to the bolt terminals using marine-grade ring terminals (not included) to ensure a solid power connection.
Connecting bare wires to the bolt terminals may result in loss of power or a short circuit.
1 Route 6 AWG marine-grade, fully-tinned copper wire (not included) to the device and to a ground location on
the boat, and select an option:
• Install a properly rated in-line fuse on the power wire as close to the power source as possible.
• Identify or install a circuit breaker, as close to the power source as possible, for use with the power wire.
2 Install marine-grade ring terminals on both the power and ground wires.
3 Lift the protector covering the positive terminal.
4 Using a 10 mm (
3
/
8
in.) socket, remove the nut , lock washer
, and flat washer
from the terminal bolt
.
5 Place the ring terminal at the end of the positive power wire on the terminal bolt.
6 Place the washer, lock washer, and nut on the terminal bolt.
7 Using a 10 mm (
3
/
8
in.) wrench or socket, tighten the nut to a torque of 4.5 Nm to secure the power wire to
the terminal bolt.
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