at the mo my Aux socket ( fag lighter ) has a feed taken off the back to power my heated seats, could i also tap off this for a small amp ( putting both the remote wire and power wire to it since its only on with the ignition )

is there any overloading or any problems this may cause ? i just want to put a small sub under the passenger seat,

 

I think I read somewhere that would overload it?

probably have better luck in the electronics section though...