Hi
I have a Macgregor 25 with what I think is a unique battery set up put in by a previous owner. There is a single battery holder under a seat in the cabin. The wires from that battery lead to a battery selector knob designed for two batteries. A second set of cables lead from that selector knob to a spot under the seating in the cockpit where there are two battery terminals. That's it. My thinking is that the second battery terminals was used for the wire from a trolling motor to come through a hole in the transom (well above the water line, near the motor mount and covered by a clamshell). Once they were on the terminals, the selector knob would be turned to indicate both batteries and then the power would flow from the single battery. At least this was my original thinking. But now, I'm not so sure. If the battery selector knob is set on both then it is expecting an input from a second battery, not running power out to the lines. The terminals are full size, the type that takes a larger wing nut.
My plan is to run 8 gauge wire from the terminals to the hole in the transom where I have a quick connect ready so I can just plug in the trolling motor and go (and I have a 50amp in line fuse already in the positive line since it was the size recommended by the trolling motor maker).
So, is my plan good? Where is it lacking? How can it be better? I want to make sure of what I'm doing before I start running electrical stuff.
As always, looking forward to my continuing education.
I have a Macgregor 25 with what I think is a unique battery set up put in by a previous owner. There is a single battery holder under a seat in the cabin. The wires from that battery lead to a battery selector knob designed for two batteries. A second set of cables lead from that selector knob to a spot under the seating in the cockpit where there are two battery terminals. That's it. My thinking is that the second battery terminals was used for the wire from a trolling motor to come through a hole in the transom (well above the water line, near the motor mount and covered by a clamshell). Once they were on the terminals, the selector knob would be turned to indicate both batteries and then the power would flow from the single battery. At least this was my original thinking. But now, I'm not so sure. If the battery selector knob is set on both then it is expecting an input from a second battery, not running power out to the lines. The terminals are full size, the type that takes a larger wing nut.
My plan is to run 8 gauge wire from the terminals to the hole in the transom where I have a quick connect ready so I can just plug in the trolling motor and go (and I have a 50amp in line fuse already in the positive line since it was the size recommended by the trolling motor maker).
So, is my plan good? Where is it lacking? How can it be better? I want to make sure of what I'm doing before I start running electrical stuff.
As always, looking forward to my continuing education.
