Engineers: 12 Volt Fish Finder in a 24 volt sytem (2 ea. 12 v Batteries in series)

[fl_dolphin]

2 questions

I am running 2 - 12 volt Batteries in series to power my Minn Kota trolling motor, and I have a Hummingbird 170 that wants 12 Volts to operate. How can I get 12 Volts out of the system with out disconnecting a battery, or putting some kind of power draining shunt resistor in the system. I really don't want to put another battery on board for the 12 volts?

2nd question:
Is there a way to look under docks with my fish finder on a horizontal plane ?

help

 

[Silvertip]

Re: Engineers: 12 Volt Fish Finder in a 24 volt sytem (2 ea. 12 v Batteries in series

You don't need a shunt and it is as simple as connecting the power and ground wires directly to ONE of the batteries. It is preferred that you wire it to the battery that has the 24 volt ground wire on it. That way you eliminate any chance of an accidental ground problem from occuring as could occur by connecting to the other battery. In case you didn't follow that, here's a picture.

 

[pootnic]

Re: Engineers: 12 Volt Fish Finder in a 24 volt sytem (2 ea. 12 v Batteries in series

Just take your 12V off 1 of the batteries,fuse the positive line with proper size fuse.
You might get interference on your fish finder though.A fish finder only draws alittle current,a real small 12V battery would last you along time(motorcycle,lawnmower etc).They also make some 12V rechargable batteries(small)that are made just for that purpose.
They make side side imaging fish finders that do what your talking about...seeing sideways,pretty pricey though.