I will be running two batteries in my new v hull build, one for the trolling motor only, and one for the electronics, Livewell, and bilge. Now that I am thinking, I have another trolling motor to put on the back when im not using the outboard. This motor will get a bit of use actually. Is it possible to wire two motors to the same battery for short term use like trolling across the lake? also, I was told to use circuit breakers for my wiring. can someone point me in the direction of a decent circuit breaker for this application, wiring electronics and trolling motor? thanks

As long as you're not using both TMs at the same time, it should be fine to wire them both to the same battery. If you plan on using them together...I'd wire the one least used to the bilge/electronics battery.

 

Far as a circuit breaker - any decent battery box has one or more built in. My MinnKota box has a 50amp for the main terminals and 2-5amp breakers...one for each of the two accessory plugs. I run my TM and fishfinder off the one battery - finder plugged into one of the accessory ports. I also run a USB adaptor in the other accessory port so I can keep my tablet charged. I use the I-Boating app on that - contour maps with GPS tracking, waypoints and recording.

guess ill run the transom tm to the electronics battery.

 

I don't plan on using a battery box

6 minutes ago, Quarry Man said:

I don't plan on using a battery box

Then I would definitely wire in a circuit breaker...or at least a fuse. Fishfinders come with an inline fuse...at least my Hook 2-4 did...so that's taken care of.

1 hour ago, MN Fisher said:

Then I would definitely wire in a circuit breaker...or at least a fuse. Fishfinders come with an inline fuse...at least my Hook 2-4 did...so that's taken care of.

thank you

You only need one circuit breaker, and you don't need a battery box with a built in one.

I prefer these https://www.amazon.com/MASO-Waterproof-Circuit-Breaker-Suitable/dp/B07JZPBTXJ/ref=sr_1_1_sspa?keywords=50+amp+trolling+motor+breaker&qid=1580708662&sr=8-1-spons&psc=1&smid=A1I897MYO1G9Y1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExMVczMThLOUxORVpHJmVuY3J5cHRlZElkPUExMDE0MTIyU0EwR003UEVRVldVJmVuY3J5cHRlZEFkSWQ9QTA4OTI5MTIzQUowQ05CNlRYTUVWJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

 

You can use one of these https://www.amazon.com/Rig-Rite-1050-Circuit-Breaker/dp/B003YZ3O3I/ref=sr_1_16?dchild=1&keywords=50+amp+trolling+motor+breaker&qid=1580708775&sr=8-16

Bass Pro Shop usually has them and try to find one with larger terminals and heavier buss that connects to the battery. 

 

Connect the circuit breaker to the one of the battery terminals, it can be negative or positive, doesn't matter.  Connect both TM leads. both positive if connection to positive battery terminal or both negative if you are connecting to the negative terminal, to the other side of the circuit breaker.  That way if you try running both motors at the same time, once they get to the max rating of the breaker, it will open. 

The only harm in running both at the same time is it places a tremendous load on the battery, and cut your run time way down.

The way you are describing this, it sounds like a 12V system, you just need to make sure both motors are 12V motors.

16 hours ago, Way2slow said:

You only need one circuit breaker, and you don't need a battery box with a built in one.

I prefer these https://www.amazon.com/MASO-Waterproof-Circuit-Breaker-Suitable/dp/B07JZPBTXJ/ref=sr_1_1_sspa?keywords=50+amp+trolling+motor+breaker&qid=1580708662&sr=8-1-spons&psc=1&smid=A1I897MYO1G9Y1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExMVczMThLOUxORVpHJmVuY3J5cHRlZElkPUExMDE0MTIyU0EwR003UEVRVldVJmVuY3J5cHRlZEFkSWQ9QTA4OTI5MTIzQUowQ05CNlRYTUVWJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

 

You can use one of these https://www.amazon.com/Rig-Rite-1050-Circuit-Breaker/dp/B003YZ3O3I/ref=sr_1_16?dchild=1&keywords=50+amp+trolling+motor+breaker&qid=1580708775&sr=8-16

Bass Pro Shop usually has them and try to find one with larger terminals and heavier buss that connects to the battery. 

 

Connect the circuit breaker to the one of the battery terminals, it can be negative or positive, doesn't matter.  Connect both TM leads. both positive if connection to positive battery terminal or both negative if you are connecting to the negative terminal, to the other side of the circuit breaker.  That way if you try running both motors at the same time, once they get to the max rating of the breaker, it will open. 

The only harm in running both at the same time is it places a tremendous load on the battery, and cut your run time way down.

The way you are describing this, it sounds like a 12V system, you just need to make sure both motors are 12V motors.

that is what I was going to buy, I was told 60 amp.

 

I will be running one battery for the 12v bow mount only, another for all the electronics. I will not use two motors on the same battery, will either get a new one or I will figure something else out down the road.