It is very simple to connect to your Car with the JBL Partybox 200 or 300. Use the included cable that connects through the cigarette connector in your Car and power on the Partybox! Please note that the 12V connection does not charge the battery in the Partybox 300 - it will only power the Partybox when in use. To charge the battery, it will have to be plugged into AC power ( 110 - 230V )