Ranger Fisherman Series Owner's Manual page 55

Electrical System
INSTALLATION OF 4 PRONG "TYPE IV" PLUG TO TROLLING
MOTOR AND BATTERY CHARGER
The Type IV plug is not designed for direct attachment to bare wires.
All wires must be terminated with a #10 ring terminal of the appropriate
wire gauge size. When assembling plug, insure that two cover screws
pass through grooves in plug body.
Always disconnect trolling motor plug
CAUTION
prior to any direct charging to any battery
in the rear storage area.
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