More info?
What type of wiring upgrade? What are you trying to accomplish? Do you mean replacing all cabin & running light wiring? Or a motor wiring upgrade? And what type of motor do you have? What instruments/appliances do you want, or are you just trying to restore the current interior lighting? Add refrigeration? TV & Stereo? Radar? Solar panels? Do you normally berth where there is shore power? The possibilities are endless as are the issues! Give us some more specifics!
