hello everyone. i bought this setup http://www.ebay.com/itm/1000w-Thunder-storm-double-ended-socket-reflector-HPS-MH-Super-Lumen-Kit-/222048410510?hash=item33b31ddb8e:g:Iz0AAOSwAuNW3fEK. my question is it says it 110v and 240 vollt, i would like to use the 110v option, but the only switch is the...