Butters just posted two options for bumping your 12v to 120v. Look at your camera charger, it should have input votlage and amps, and output voltage and amps. Volts x Amps gets you watts. so if your camera charger is rated at 120v ac @ .5 amps (or 500 ma) 120x.5=60 or 60 watts.
84 Honda Goldwing (GL1200)