i have not long got a astra g on a 02 plate and the cigarette lights is a weired 1 a dont know whats up with it, first i wanted a new little lighter that fits in and i got 1 and it dont fit i wasent really bothered about it but then i went to plug my sat nav in to charge and it dont fit?

what has others done if you can let me know thanks if any1 else has had this problem thanks gaz