If the fuse isn’t blown, and the socket has power, then there may be an issue with either the socket or the accessory plug that you are trying to use with it. Cigarette lighter and 12v accessory ...

Here's how to do it: Plug the battery memory saver into your vehicle's 12V power receptacle. For best results, always use a new 9V battery to power the memory saver. First, determine the positive ...