hi i have an ericson 25,,,,dont know a damn thing about boats, but i replaced the wiring by cutting out all the bad stuff,then put in new fans,lights, radio etc...i took all the fan wiring connected it to a new switch in main box and labeled it fans.then labled a new switch radio and so on the most fun was hiding the new wiring, remove the panels where you can,,,use an electricians wire puller run it through the voids connect to your wire and pull it back....some one told me you could use a breaker box like for houses but i would ask at west marine and see if you can get a new control panel....battery leads go from the battery to the control panel,,,you almost cant get that wrong. but i can tell you....work only on one set of wires at a time, even if it looks like you can run several wires together at one time through a hole,,, you wont pull your hair out,,, and be sure that the control box you get has fuses.....thats my experience for now...