how to connect reflector to ballast

Hello, i have bought new cooltube reflector with 600w ballast, and im now trying to figure out how to connect it, because reflector already got plug. I wonder if i need to cut reflector plug ant try to add those three ballast wires? Here i add some photos

http://s7.postimg.org/efvuqusfv/1394550992604.jpg
http://s9.postimg.org/uoez0yhpb/1394551102709.jpg
http://s15.postimg.org/d8bnvtgnv/1394551161223.jpg

Please help!