Convert your AC headlight output to charge a 12 volt battery. Handles up to 150 watts. Must be connected to a battery to function properly.
This regulator/rectifier requires ungrounded inputs from the lighting coil. Many lighting coils are internally grounded and will require modification often referred to as 'floating the ground'. This simply means cutting the grounded end of the lighting coil wire, extending it and running the extended end out of the case along with the original 'live' end of the lighting coil wire.