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Help me with trolling motor battery wiring

Posted on 5/13/20 at 9:43 pm
Posted by Jack Daniel
Gold member
Member since Feb 2013
27517 posts
Posted on 5/13/20 at 9:43 pm
I just picked up a bass boat with a 24-volt motor guide trolling motor but did not have batteries. There are three wires coming from the trolling motor to batteries, 2 reds and a black with 1 jumper wire in the back.

I have always had 2 wires coming from the trolling motor and used the jumper. How exactly are the 3 wires from t/m hooked up?
Posted by highcotton2
Alabama
Member since Feb 2010
10079 posts
Posted on 5/13/20 at 9:48 pm to
Do you have a switch to toggle between 12 and 24 volts? With 3 wires you should be able to run either.
Posted by Jack Daniel
Gold member
Member since Feb 2013
27517 posts
Posted on 5/13/20 at 9:50 pm to
Only switch on pedal is a 3-way switch for off/T/non-stop
Posted by highcotton2
Alabama
Member since Feb 2010
10079 posts
Posted on 5/13/20 at 9:53 pm to
2 reds and a black plus a jumper? What are you calling the jumper? You have a picture?

This post was edited on 5/13/20 at 9:56 pm
Posted by DTRooster
Belle River, La
Member since Dec 2013
8629 posts
Posted on 5/13/20 at 10:00 pm to
It had a 12/24v trolling motor on it. Just make sure the 24V pin on your TM harness matches the 24V pin on the boat
Posted by Jack Daniel
Gold member
Member since Feb 2013
27517 posts
Posted on 5/13/20 at 10:05 pm to
I’m calling the jumper the wire jumping from pos of one battery to neg of other battery. aka: the black line between two batteries in your drawing.
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
69254 posts
Posted on 5/13/20 at 10:06 pm to
I'm not sure why you would have 3 wires. Is the other one for bow lights or something? Should just be two or four big arse wires.
Posted by Jack Daniel
Gold member
Member since Feb 2013
27517 posts
Posted on 5/13/20 at 10:15 pm to
I think your diagram is the answer. I do not have a 12/24 toggle switch but I do have 2 pos wires coming from trolling motor plug
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
69254 posts
Posted on 5/13/20 at 10:30 pm to
Unass all that shite, run a hot and a ground from the bow to the batteries, do the jumpers at the batteries, and put a breaker on the hot at the last battery before it goes to the front
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