Can anyone help. I want to run a 12v tv in my motorhome. I've seen one in tesco (it's a Cello) and it says it is 12v/240v. How do i connect the tv to the 12v socket when I've only got a lead with a 3 pin plug. I want to keep the 3 pin plug for when I'm on hookup. Most of the time i don't do hookup, hence the need for 12v. I'd appreciate any advice,thanks.