I know that H-D recommends not using the cigarette lighter socket for anything other than the cigarette lighter. However, I'd like to be able to use the socket on my 09 Road Glide for my GPS unit. Does anyone know the amperage that the cigarette lighter socket can handle? My Goldwing has a 12 volt socket that's rated at 5 amps and that's enough to run my Garmin GPS. Thanks.