[Impreza spoiler install, how to wire third brake light]

I just bought my daughter a WRX spoiler for her. 06 Impreza. I was wondering if someone cold tell me how the light in the spoiler gets wired? Would like to make it look factory! Also some pics of the bottom of the decklid to show the mounting and wiring would be really nice!

Thanks in advance!

Chris

[howdy! I have a question]

My daughter just bought a 06 impreza. I bought her a WRX spoiler spoiler for it, and was wondering how to wire in the brake light. Do you plug it into the other third brake light in the rear windo some how? Any one got a picture?