This video will show you how to install part #AUX-700, a second battery system, into a late model VW Vanagon full camper.
This easy-to-install kit is designed to charge a second deep cycle battery (located under the drivers' seat) while the engine is running and isolate it when the ignition is off. You can then safely run your electrical devices from the auxiliary battery without depleting the charge of your primary starting battery.
Basic Aux Battery Kit: gowesty.com/pr...