Buying a Satnav

[GSD4ME]

Dear all,

I would like to get a Satnav device for my car but don't know much about them.
My main query is how does it work - not technically, as Iknow all about the theory behind GPS positioning etc., I mean physically attaching to the car etc? I have an old Rover ('P' reg.) and wonder how to connect a satnav to it. Do I plug something into the cigarette lighter for power? Or otherwise? I don't have a CD player in the car (only a fitted radio), no mobile phone technology or anything else 'new' I simply want to have a Satnav that I can take to the car, plug in and it will work. At the end of the day, I take out the satnav and lock the car.
Any help would be most appreciated

[derekpara]

Most satnavs fix to the windscreen by suction, so when you leave the car it\'s best to take the suction bracket with you as well as the device itself; and wipe off the tell-tale circular suction mark from the windscreen.