View of plug and socket next...
Now I know what you're going to say: how can I possibly use a bright blue mains cable with a black car? What was I thinking!? Well the pre-heater came with a blue cable. I am going to make up a black cable, and use that on the driveway. The blue cable I shall keep in the car, together with an extension lead and an RCD adapter, so I can plug in if I'm away from home.