They feed off of the cranking battery... which brings me to a minor dilemma for me... I am going to put a third battery in my boat, no doubt.
I wanted to setup a parallel 12v for the trolling motor so that I will have tons of trolling time, but I will have to buy a new battery.
If I just put the one I have in there (Grp 27year and half old battery), I can just have it available as a spare. IF the trolling motor or the starter die, I can just hook up the spare to get me trolling again, or get me started.
My third option is to just move all electronics to the third battery and not have it draining the starter battery. This way, push come to shove, I can move things around if I have to.
I know that some people say the fish finder will not work well with the trolling motor, but I hate to be comfortable using electronics all day/night and then I cant start the boat! I would love to move the electronics and trolling motor to a 12v parallel set up. This way, I will have a ton of power and the starter batter is separate. Decisions...
Don't even get me started on the gas tank... is it enough?! LOL! I plan to take some extra just in case... At least until I run the boat around and get a feel for it.
That is where I initially mounted mine, in the battery compartment against the wall that separates it from the storage compartment. It seemed to be fine... But I don't want to create some kind of danger zone... This is after I read the precautions I chickened out until I can get some more information. I am thinking about putting it in the storage compartment, which I do not want to do. I am also thinking of mounting it to the stern... Not really mounting, just propping it up. I is mounted on a board with equal circumference around it.