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 dimming switch. i thought there would be a 110v or 240v selector, is this normal? second question is can i just cut off the 240v end of the cord that came with it and put a 110v on the end as long as i wire it up right? this is the first one i have bought. there is not any a on off switch. i would ask the seller but they said they are not familar with these things, its a one time deal selling them. thanks for any help