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#12669444 - 03/12/18 05:32 PM Blowing fuse when hooking up trolling motor battery?
DPDALAN Offline
Angler

Registered: 10/22/09
Posts: 264
Loc: LAKE ATHENS TX
I have a 24 volt trolling motor and one of the inline 30a fuses for the charger blew. Minkota 315D charger. I took off the cables and cleaned everything up. When I put the charger wire back on the terminal, I get a spark and blow the fuse. When I put the wire on the terminal and then try to install the inline fuse, I get a spark and blow the fuse. This is on the battery that is wired to the other one negative side of this battery to positive of the other battery. Am I just not holding my mouth right, or is there a specific order to put the trolling motor wires and then the charger wires?
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#12669549 - 03/12/18 06:36 PM Re: Blowing fuse when hooking up trolling motor battery? [Re: DPDALAN]
Capt Craig Offline
Extreme Angler

Registered: 08/25/09
Posts: 1599
Loc: Richland-Chambers
You have a short somewhere. Start tracing from the batteries to the end.
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Capt. Craig Copeland
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2013 Nautic Star 2110 Shallow Bay Boat
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#12669598 - 03/12/18 07:01 PM Re: Blowing fuse when hooking up trolling motor battery? [Re: DPDALAN]
DPDALAN Offline
Angler

Registered: 10/22/09
Posts: 264
Loc: LAKE ATHENS TX
It’s really weird, I know the batteries are wired correct, the cables are labeled from the factory by skeeter. The trolling motor is unplugged. The charger is off. But as soon as I touch the battery terminal with the charger wire, get a spark and blow the in-line fuse. I tried doing positive first, negative first, putting on both and then putting the fuse in, keep getting a spark and blowing one of the fuses. I could see a short making it not charge or the trolling motor not work, but this is making a spark as soon as I connect the 4th wire. Sometimes it will spark when I touch the negative and blow the fuse on the positive terminal.
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#12670563 - 03/13/18 10:41 AM Re: Blowing fuse when hooking up trolling motor battery? [Re: DPDALAN]
scruboak Offline
Extreme Angler

Registered: 03/11/03
Posts: 1282
Loc: Cisco,tx
sounds like a problem with a bank on the charger.Id call minnkota service.Move that bank to your starter battery and if it blows the fuse there it is the charger.


Edited by scruboak (03/13/18 10:50 AM)

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#12674788 - 03/15/18 06:25 PM Re: Blowing fuse when hooking up trolling motor battery? [Re: DPDALAN]
DPDALAN Offline
Angler

Registered: 10/22/09
Posts: 264
Loc: LAKE ATHENS TX
I did exactly that. Moved that bank to starting battery and the fuse immediately blew. Bought a new charger and hooked it up. No problems. All three batteries reached full charge. Got same minnkota 315d charger. Did not even have to drill new mounting holes.
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#12675202 - 03/15/18 11:20 PM Re: Blowing fuse when hooking up trolling motor battery? [Re: DPDALAN]
scruboak Offline
Extreme Angler

Registered: 03/11/03
Posts: 1282
Loc: Cisco,tx
Glad you got it fixed..

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