90-MM6900
3
WIRING & BATTERY
Batteries contain sulfuric acid which can cause
severe burns. Avoid contact with skin, eyes, and
clothing. The battery also produces hydrogen and
oxygen gasses when being charged. This
explosive gas is released through the battery
vents and may form an explosive atmosphere
around the battery for several hours after it has
been charged. Electrical arcing or flames can
ignite the gas and cause an explosion which may
shatter the battery and could cause blindness or
other serious personal and property damage.
Refer to your battery manufacturer’s guidelines for
charging instructions.
Be sure all switches are in the OFF position before
connecting the motor to the batteries. Electrical
arcing near the battery could ignite hydrogen gas
and cause the battery to explode.
Avoid serious injury or death from a possible fire
caused by a direct short; do not jump-start an
outboard motor using the trolling motor
battery/batteries.
Wire & Cable Routing
•
Route trolling motor wires on the opposite side of the
boat from other miscellaneous boat wiring (bow light
wireing, spot light wiring, etc.).
•
Transducer installation should be installed according
to the manufacturer’s specifications. To avoid
interference, cables should be routed separately from
the trolling motor power cables.
•
IMPORTANT: Do not route the transducer cable
down the trolling motor power cord or foot pedal
assembly cable. Route the transducer cable down
the arm of the mount, then into the bow console.
•
Sensitive electronics, depth finders in particular,
should be connected directly to the main engine
battery. If only a one battery system is used, then
connect with separate cables.
Establishing a Common Ground
MotorGuide recommends isolating the trolling motor
battery/batteries from the main engine battery.
Electrolysis Issues
– Using the engine starting battery as
a source of power for any trolling motor may cause
electrolysis on metallic parts.
9
If you have followed the battery wiring and
installation instructions in this manual and your
boat continues to have electrolysis issues, you
will need to separate the trolling motor from any
other boat electronics.
9
Remove the engine starting battery from the
wiring configuration of the boat and isolate the
power circuit for your trolling motor.
•
Establish a Common Ground:
Common ground
means the ground for the main engine accessories
and your trolling motor are connected to the same
negative ground terminal.
•
Not having a common ground can cause severe
corrosion or electrolysis. If left unchecked, damage
may be caused to your trolling motor and boat.
•
Establishing a common ground connection will allow
increased sensitivity and improve detail on a sonar
display.
Recommendations
•
Battery Type
– The recommended battery is a 12-
volt Deep Cycle battery.
•
Circuit Protection
– MotorGuide recommends
installing a 50 amp manual-reset circuit breaker in line
with the trolling motor positive leads within (1.8 m) 72
inches of the battery(s). To order a circuit breaker kit,
contact your local Service Dealer, request kit number
MM5870
.
•
Wire Size
– For optimum performance, MotorGuide
recommends the use of six (6) gauge (13 mm) wire if
extending existing wire beyond the standard battery
cable supplied with the product.
•
Bow Plugs
– For temporary trolling motor
installations, MotorGuide recommends the use of a
quality plug designed for marine applications.
WARNING
!
WARNING
!
WARNING
!