12V water pump with cigarette lighter connection

can anyone tell me if i can buy a 12V pump (and what model it is) with a cigarette lighter style connection that i can use to transfer fresh water from an aquaroll into the fresh water tank on my elddis autoquest 145, my van does not have an autofill facility so i want to plug the pump into either of my cigarette sockets to top up my tank when needed

cheers,