gps not working

What sort of connector? If it's "mini USB" you might have another device that fits it. "Be Gentle," lol

[ame="https://www.youtube.com/watch?v=BuVJEn9wk9Y"]The Band Perry - Gentle On My Mind - YouTube[/ame]

That might at least tell you if it's the device or the charging cable. As above, many of those 12V plugs have fuses.....unscrew the end "thingie."

Also, sometimes, the plastic to metal lashup just "doesn't like" some lighter sockets