SOURCE: I have a 1999-model Minn-Kota bow-mount trolling
55 is a 12 volt system northland marine has diagram.
SOURCE: Wire going to prop of Motorguide trolling motor shorted
Unless you are mechanically inclined, dont attempt this. Take the lower unit apart by removing the prop and removing the two bolts that hold the forward and aft housing to the center housing. Fwd being the cone shaped part. Pull the aft housing away from the motor so you can inspect the connections to the board that holds the brushes and the soldered wiring terminals. You should find the solder missing from at least one of the terminals that connects the wiring from the foot switch to the speed control windings inside the aft housing. Clean up the terminal and wiring and re-solder. Also re-flow the solder on the other terminals. Clean up the seals and the area where the seals meet the housing parts. Replace seals if damaged. Reassemble the lower unit and torque the bolts 45-50 in-lbs and no more otherwise you will fail the seals. This problem is due to a "cold" solder joint that creates a high resistance to elec current flow and heats enough to melt the solder. This is a result of poor quality control at the manufacturer. Good luck.
SOURCE: Great white trolling motor,bow mount,24 volt, 82lb
The heat is developed from to much resistance from batteries to TM, check for loose/corroded connections at batteries, including the jumperwire, also check the size of wire from battery to plug, should be at least 8 gauge if not 6 gauge depending on the length of run. If corrosion has built up inside the wires this will also cause high resistance causing excessive heat build up. I would prolly just replace boat wiring to make sure none of the above problems are present. Use tinned copper marine grade wire that is multi stranded.
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