12 Volt Interface Block and 220 Amp Alternator Options
I am unsure about the 12 volt interface block. I have it as an option but do not know what it does. Can someone please explain this and the 220 amp alternator. Do they work in tandem. If I want to install a ventilation vent with fan in the roof of the van, does the fan hook up to the interface block? Would I need a second battery to run the fan, extra lights, etc so that the engine battery is not run down or does this alternator and interface block deal with that. Obviously do not know the workings of batteries and electrical attachments.
Thanks,
Doc