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Max Online: 36273 @ 01/23/13 02:34 PM
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#10853655 - 05/18/15 06:01 PM 12v/24v wiring/ground question ????
Cory Lee Offline
Outdoorsman

Registered: 05/21/10
Posts: 79
So I've got a 24v trolling motor set up and everything else is ran off of the starting battery. Everything works but I've got a few questions.

1. Should the 24v system have a ground ran from the ground terminal to the ground terminal of the 12v system which goes to the engine block ground?

2. I saw this diagram earlier of a Perko switch, and the guys says he can jump his starting battery with his trolling batteries using the switch? Anybody have any input on this?


3. Is there a way to have the alternator charge all 3 batteries vs just the starting battery? Or do I need the MinnKota alternator?

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#10853889 - 05/18/15 07:41 PM Re: 12v/24v wiring/ground question ???? [Re: Cory Lee]
smooth move Online   content
Pro Angler

Registered: 10/14/12
Posts: 884
Loc: bayou vista,tx
wish i could help, but, that's over my head.
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#10853965 - 05/18/15 08:17 PM Re: 12v/24v wiring/ground question ???? [Re: Cory Lee]
hopalong Offline
Super Freak

Registered: 09/06/08
Posts: 74407
Loc: manager, drake river ranch (fo...
when you turn the perko to all yes you can jump over, you get the amps from all 3 batteries and still 12v.

you can buy an add on to charge all batteries while running, check the minn kota site I think they have one.

you do not need to ground the 24v to the engine and it could cause problems you do not want. the 24v is a closed system and batteries to tm is all that is needed.
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#10854146 - 05/18/15 09:09 PM Re: 12v/24v wiring/ground question ???? [Re: Cory Lee]
Cory Lee Offline
Outdoorsman

Registered: 05/21/10
Posts: 79
Thanks hopalong

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#10854524 - 05/19/15 12:51 AM Re: 12v/24v wiring/ground question ???? [Re: Cory Lee]
Rickmb Online   content
Pro Angler

Registered: 07/07/12
Posts: 699
Loc: San Antonio
Originally Posted By: Cory Lee
So I've got a 24v trolling motor set up and everything else is ran off of the starting battery. Everything works but I've got a few questions.

1. Should the 24v system have a ground ran from the ground terminal to the ground terminal of the 12v system which goes to the engine block ground?

2. I saw this diagram earlier of a Perko switch, and the guys says he can jump his starting battery with his trolling batteries using the switch? Anybody have any input on this?


3. Is there a way to have the alternator charge all 3 batteries vs just the starting battery? Or do I need the MinnKota alternator?

Your diagram looks correct. Thee are ways to charge the batteries from the motor but I don't think it will be very effective. Deep Cycle batteries take longer for a deeper charge. Unless you are making an hour run somewhere I doubt the charge from the motor will make that much of a difference.
On another note, I was having trouble keeping all of my electronics running on the starting battery. I installed a 24v to 12v converter and feed regulated and filtered power to my electronics from the TM batteries. From the converter it goes into a fuse box with each fish finder and a 12V USB plug running on their own circuits. I have a main cut off switch for the TM batteries and another main switch for the starter battery that can connect the first TM battery for emergency starts. Its a 1, 2, 1+2, OFF switch. I can run all of my electronics and the TM at 50 for 8 hours and still have plenty of juice in the batteries.
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#10855020 - 05/19/15 09:35 AM Re: 12v/24v wiring/ground question ???? [Re: Cory Lee]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10536
Loc: Littlefield Tx & Lake A. H. US...
Top trolling motor is not in the perko switch circuit. Will boost cranking battery from middle battery for trolling only when set to 2 position.
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“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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