If you have a 24 volt trolling motor circuit, you have to make sure you use tap off of the first battery in the 24 volt string (the battery which is actually connected to the boats ground and then to the second trolling motor battery). If you use the second battery (with the negative held at +12 vdc from the boats ground) you'll have a “spectacular light show” (right next to your fuel tank...) and the sweet smell of burnt ozone, because you're then applying +12 volts to a battery terminal that's connected to ground. It's actually a real easy thing to do, but take your time and be careful. If you wanted to be safe about it, you could disconnect your trolling batteries completely, jump your motor, and then connect the trolling batteries as they were. That would minimize any room for error since the trolling batteries would then be isolated from everything. But come on, you're a young lady and I'm sure you could find someone to do the work for you while you sat down in the shade, eating a bonbon... :wink: