[Jayhad]

just look inside where the batterys go on post should have a red wire soldered to it and one post should have a black wire soldered to it. The spings are - and the flat contacts are +. take the red wire attach it to the + post of the 9v and take the black wire attach that to the other post on the battery.

Sit back and listen to that thing scream, it won't last for longer but you will giggle