Topic: Problem with wiring of trolling motor and batteries

Problem with wiring of trolling motor and batteries

I have a question about the way BCB are wiring the trolling motor. In the MotorGuide Wiring and Battery Recommendations booklet you will see that the illustration for a 24-volt system page 3, does not have a circuit breaker in between the two batteries. I was helping a friend the other day at was have problems with the trolling motor on his 2009 Puma. We found that the circuit on his Puma had a circuit breaker between the batteries. Which way is correct? I can understand it on the 36V system but not on the 24volt and even then not between the batteries. It is not needed between the batteries. The problem it was cause him was that the circuit was passing some voltage but not the amperes needed to run the motor. We tested it with a voltmeter and found it to have 24V all the way up to the front of the boat power outlet. When you plugged in a new trolling motor it still did not work, but when I remove the circuit breaker between the two batteries it worked. I think what started the problem is that he had a older type MotorGuide trolling motor with the depth finder on it and it had gotten some water in to the motor.

This topic has 3 replies, 3 voices, and was last updated 14 years, 10 months ago by Jones TrollingMotor.

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July 5, 2010 at 4:47 pm #365227

Bass Cat Boats
Keymaster

It is to prevent a wire from shorting the system if something we to come in contact with that post and cross things up. It is not something that most require, though BCB uses one on all cross over wires. You must have a Pinpoint System and those require the trolling motor wires to be grounded also.

July 5, 2010 at 5:45 pm #365230

DJones54
Participant

No it was not a Pinpoint just a Tournament style.

July 5, 2010 at 9:32 pm #365233

Jones TrollingMotor
Participant

Since a 24V, or a 36V, is a series circuit, the breaker can be put anywhere in the circuit, but close to the battery is best. The crossover is a good place for an inlne breaker. For the trolling motor to work after you took the breaker out, indicates a problem with either the breaker or the connection at the breaker. As you said, you were getting the voltage, but when loaded, the voltage and amps would fall and not run the trolling motor. I do hope you installed another breaker.JohnJones Trolling Motor Services870 773 3474Motorguide/MinnKota/PowerPole/Lowrance/Humminbird
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