http://www.ebay.co.uk/itm/12v-Electric-S...3156#vi-content

The link above is quoted as 80 Watts and runs off the Cigarette Lighter socket so you would not need to worry about your battery discharging by a signifigant amount. In context each Fullbeam will be 60 Watts a piece.


2009 4/4 Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Connaught Green +8 prev