'Morning Gents
Slightly off topic....but at least I'm not selling shoes and it is engineering of a sort.
I have a good friend who has several modern vehicles and even more older ones (pre-war Austins). Said friend is getting married soon and I thought of giving them a vehicle-type satnav system as a wedding present. I assume these things need 12volts, but I don't know the current draw?
The older cars have six volt systems, without the convenience of cigar lighter sockets. Would it be feasible to run a decent GPS system off a (12v by 12Amp/hour?) sealed lead acid battery, the sort of things used in a burglar alarm system? I'm imagining a small brick-sized battery on the floor of the car, couple of spade connectors to a cable which terminates in a cigar lighter-type socket and I've got a system which is portable between vehicles.......or have I?