Understanding the R.V. Electrical System - YouTube Click to view on Bing8:03Porter's R.V.s, an Oregon R.V. dealer since 1966! Watch this video to understand the basics of the R.V. 12V and 120V systems. Representing such brands as Cougar Travel Trailers and 5th wheels, Jay Flight travel trailers, Author: PortersRVViews: 178K Electrical - DIY Camper A complete camper-trailer needs three electrical systems: Wiring from the tow vehicle for lights and brakes; A 12v system for accessories and a 240v system to provide power for appliances. See this wiring diagram for the correct plug and socket wiring for both round and flat connectors. How to Wire a Travel Trailer for Electric | It Still Runs Travel trailers customarily have three sets of wiring installed. There are the 12-volt circuits which run the mechanical and exterior lighting functions of the trailer, controlled by the trailer hitch harness and the tow vehicle. There are the interior 12-volt circuits for lighting and outlets which are powered by a Travel Trailer Wiring Schematic | Free Wiring Diagram Travel Trailer Wiring Schematic - Collections Of Jayco Trailer Wiring Diagram Sample. Wiring Diagram Camper Trailer Inspirationa Travel Trailer Wiring. Wiring Diagram for Rv Electrical New Typical Wiring Diagram Best Od. Fema Trailer Wiring Wire Center •. RV Electrical: All the Basics You Need To Know! - RVshare RV Electrical: All the Basics You Need To Know! By Amy Your RV electrical system is what allows you to utilize many of the modern conveniences that you’ve become accustomed to, from overhead lighting and vent fans to your HVAC system and refrigerator. How to Wire an Electrical System in a Camper | It Still Runs An inverter produces 120-volt power from 12 volt power, so you can use household appliances like coffee makers and hairdryers. A converter does the opposite when the camper is plugged in to a shore power hook-up, and, a converter charger also automatically recharges the coach battery.