Rv’s use both 12v and 120v current to power and operate. 12v system operates off a battery and is then kept charged through a power converter when shore power is utilized. 120v system is powered through either shore power 30 & 50 amp inlets or generator power. Along with that there are components such as converters, inverters and transfer switches that keep power flowing. We offer wide range of diagnostics for electrical issues that may arise.