Domain: tiger-web1.srvr.media3.us help with wiring trolling motor from 12v to 24v | Outdoor Board
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help with wiring trolling motor from 12v to 24v

Posted on 3/14/16 at 6:45 pm
Posted by beenHADdat
Port Allen, LA
Member since Sep 2011
423 posts
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Posted on 3/14/16 at 6:45 pm
i bought a new boat and i want to upgrade the trolling motor from a 12v to a 24v. there are two wires running from the batteries in the back of the boat to a 2 prong plug in the front of the boat. do i need to buy a 3-prong plug and run a 3rd wire (which would almost be impossible)?

a friend of mine mentioned i didnt need another wire or plug if i ran the two batteries in a series. anyone know if this is true?
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Posted by cbr900racer22
City of Central, LA.
Member since Sep 2009
1402 posts
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Posted on 3/14/16 at 6:49 pm to beenHADdat
That is correct. Come off the positive on one battery and the negative on the other. Jump the two remaining posts.
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Posted by Barf
EBR
Member since Feb 2015
3727 posts
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Posted on 3/14/16 at 6:49 pm to beenHADdat
Am I reading this right? Are you trying to run your current 12v motor on 24v?

Yes. Wiring in a series will double the voltage.
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Posted by cbr900racer22
City of Central, LA.
Member since Sep 2009
1402 posts
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Posted on 3/14/16 at 6:50 pm to Barf
I saw the word "upgrade" so I am hoping a replacement of the trolling motor.
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Posted by beenHADdat
Port Allen, LA
Member since Sep 2011
423 posts
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Posted on 3/14/16 at 6:55 pm to Barf
no, i have a 12v right now, but i want to buy a 24v if i dont have to run another wire
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Posted by beenHADdat
Port Allen, LA
Member since Sep 2011
423 posts
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Posted on 3/14/16 at 6:57 pm to cbr900racer22
so you're saying i could use the same plug that i currently have for my 12v and i dont have to run another wire?
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Posted by cbr900racer22
City of Central, LA.
Member since Sep 2009
1402 posts
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Posted on 3/14/16 at 6:58 pm to beenHADdat
You don't have to run another wire but you may have to pull bigger wire. I went from a 12V 40# to a 24V Tour 82#. I had to pull #6 and installed a 50A circuit breaker as close as I could to the battery.

Also, are you planning on installing a 3rd battery? You can do it with the cranking battery, as I know some who do, but I didn't and wouldn't recommend it.
This post was edited on 3/14/16 at 7:01 pm
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Posted by QuietTiger
New Orleans
Member since Dec 2003
26256 posts
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Posted on 3/14/16 at 7:02 pm to cbr900racer22
quote:
cbr900racer22

Follow this advice.
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Posted by beenHADdat
Port Allen, LA
Member since Sep 2011
423 posts
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Posted on 3/14/16 at 7:03 pm to cbr900racer22
yes im going to buy a 3rd battery
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Posted by beenHADdat
Port Allen, LA
Member since Sep 2011
423 posts
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Posted on 3/14/16 at 7:05 pm to cbr900racer22
going from 55lb to 70lb
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Posted by cbr900racer22
City of Central, LA.
Member since Sep 2009
1402 posts
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Posted on 3/14/16 at 7:06 pm to beenHADdat
When you decide on the trolling motor post it and I will help you with what you need. Also need to know what you have on there now.
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Posted by 007mag
Death Valley, Sec. 408
Member since Dec 2011
3923 posts
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Posted on 3/14/16 at 7:07 pm to beenHADdat

Wire size and breaker/fuse will be determined by amps to run new motor.
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Posted by CP3
Baton Rouge
Member since Sep 2009
7551 posts
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Posted on 3/14/16 at 7:09 pm to 007mag
^ yup
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Posted by beenHADdat
Port Allen, LA
Member since Sep 2011
423 posts
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Posted on 3/14/16 at 7:09 pm to cbr900racer22
i have a 12v 55lb minn kota edge, and will be replacing with a 24v 70lb minn kota edge
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Posted by Dj1127
Member since Aug 2015
34 posts
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Posted on 3/14/16 at 7:11 pm to beenHADdat
I went from a 55 minn Kota to a 80lb I pilot. You can leave the plug the same just connect the two batteries as shown in the diagram above with some jumper wires. Be sure to put a 60 amp breaker in between.
This post was edited on 3/14/16 at 7:13 pm
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Posted by cbr900racer22
City of Central, LA.
Member since Sep 2009
1402 posts
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Posted on 3/14/16 at 7:12 pm to beenHADdat
From 55 to 70 your wire should be good as the pounds of thrust are close. More voltage, less amps in this case.

LINK

If you run into any problems with the install, email me.
This post was edited on 3/14/16 at 7:39 pm
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Posted by beenHADdat
Port Allen, LA
Member since Sep 2011
423 posts
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Posted on 3/14/16 at 7:20 pm to cbr900racer22
cbr900racer22, thanks man... thanks everyone for the help
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Posted by cbr900racer22
City of Central, LA.
Member since Sep 2009
1402 posts
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Posted on 3/14/16 at 7:25 pm to beenHADdat
You're welcome.
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Posted by QuietTiger
New Orleans
Member since Dec 2003
26256 posts
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Posted on 3/14/16 at 7:30 pm to cbr900racer22
quote:
cbr900racer22

You might become very popular.
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