No Problem
I did the change from the charger that came with the boat (1990) to a 10 amp smart charger about 3 years ago. It was simiple and there were no issues that I am aware of. Instructions with the charger were straifgt forward. I mounted the new charger on the bulkhead under the chart table where it was accessible, out of view and close to the batteries so cables were short. I also changed the batteries to gel cells at the time however that required nothing more than setting the charger to gel rather than wet cells.I am only 20 minutes from you at Semiahmoo so would be happy to show the setup to you but will have to wait until early October as I am traveling from Saturday onward.