Connecting The Batteries In Series; Automatic Jump Start Systems And Selector Switches; Connecting The Batteries In Series (If Required For Your Motor); 24 Volts Systems - MINN KOTA ULTREX Installation Instructions Manual

CONNECTING THE BATTERIES IN SERIES

The negative (-) connection must be connected to the negative terminal of the same battery that the trolling motor negative lead
connects to. In the diagrams below this battery is labeled "Low Side" Battery. Connecting to any other trolling motor battery will
input positive voltage into the "ground" of that accessory, which can cause excess corrosion. Any damage caused by incorrect
connections between battery systems will not be covered under warranty.

Automatic Jump Start Systems and Selector Switches

Automatic jump start systems and selector switches tie the negatives of the connected batteries together. Connecting these
systems to the "High Side" Battery or "Middle" Battery in the diagrams below and will cause significant damage to your trolling
motor and electronics. The only trolling motor battery that is safe to connect to one of these systems is the "Low Side" Battery.
NOTE:
The internal bonding wire is equipped with a 3 amp fuse. Improper connections described above carrying in
excess of 3 amps will blow this fuse and no further damage will be exhibited. If this occurs, RF interference from the
trolling motor affecting sonar units and other electronics will be more significant. If the fuse is blown the wiring error
should be found and addressed prior to replacing the fuse. The replacement fuse should be 3 amps or less. An intact fuse
does not imply correct rigging; significant damage can be done by incorrect wiring without approaching 3 amps of current.
CONNECTING THE BATTERIES IN SERIES
(IF REQUIRED FOR YOUR MOTOR)
24 Volt Systems
Two 12 volt batteries are required. The batteries must be wired in
series, only as directed in wiring diagram, to provide 24 volts.
1. Make sure that the motor is switched off
(speed selector on "0").
2. Connect a connector cable to the positive ( + ) terminal of
battery 1 and to the negative ( – ) terminal of battery 2.
3. Connect positive ( + ) red motor lead to positive ( + ) terminal
on battery 2.
4. Connect negative ( – ) black motor lead to negative ( – )
terminal of battery 1.
For safety reasons do not switch the motor on until the propeller is in the water. If installing a leadwire plug, observe proper
polarity and follow instructions in your boat owner's manual.
30 | minnkotamotors.com
To trolling motor negative
Two 12-volt batteries connected in series for 24 volts
WARNING
+24 Volts to trolling motor
positive (or circuit breaker)
24 Volt Series Connection
Neg - Pos +
Battery #1 (Low Side)
©2016 Johnson Outdoors Marine Electronics, Inc.
Neg - Pos +
Battery #2 (High Side)