Old outboard ground wire melting

Maybe this will help!?
Hope so

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Best to you

A solid yellow light on Bank 1 of your Minn Kota 315D 3 bank charger indicates that the charger is in "float" mode, which means it is maintaining the battery's charge at a safe level. It sounds like there may be an issue with the connections or wiring for Banks 2 and 3, preventing them from receiving power.
Here are a few things you can try:

• Check the connections between the charger and the batteries for Banks 2 and 3 to ensure they are tight and secure.
• Ensure that the circuit breaker for the charger is not tripped.
• Check the wiring for Banks 2 and 3 for any visible damage or corrosion.
• Ensure that the batteries for Banks 2 and 3 are not in a low state of charge or are not faulty.
• Try to reset the charger by unplugging it from the power source and plug it back in after a few minutes.

Hi, you can get away with a 70 amp hour deep cycle battery but I generally fit a 100 amp hour deep cycle battery. Hope this helps, regards Phil.

2 bank battery Minn Kota System wiring diagram Google Search

Connecting dual bank charger to 24V trolling motor General Discussion...

2 bank battery Minn Kota System wiring diagram Google Search

I would check the battery. If you're using an old or under charged battery you will loose power for sure. Make sure you're also using a 12v deep cycle marine battery as this will ensure proper operation and a longer battery life.

does anybody fix minn kota 3 bank chargers

First. the +/positive/hot wires go to the respective/separate +positive/hot side battery terminals.. and the -/negative/ground wire go to their respective/separate -/negative/ground battery terminals.
The wires from the charger are "paired out".. meaning the + and - pair must go to the same battery. .. you can't mix and match.

You should only run the motor with a 24v battery or two 12v batters 'jumped' out. To jump the two batteries, connect the positive on one batter to the negative on the other battery and hook the trolling motor battery cables up to positive and negative terminals that are NOT jumped out as you would normally. Don't run this with 12v as you will have serious problems if you do. They do not make a 65lb thrust in 12v - too much pound thrust to run off of 12v.

I use Red Hot Mama batteries. These have held up for longer than any other brands that I have used. These are deep cycle marine wet ones.