I just installed a factory spoiler on my 03. Mounting was easy (Looks great by the way!). Now I have to hook up the brake light in the spoiler. I saw a factory wire bundle routed into the trunk lid. Is there factory brake light wires pre installed inside the trunk lid or do I have to tap into the main brake lights?

 

Remove the 2 existing 3rd brake bulbs and tap into one of their wires for your spoiler.

 

The third brake light inside the car in the window?

 

Yes the one inside the back window. You access the bulbs in the trunk though.

 

gotcha, thanks!

 

You should disconnect the 3rd brake light and just use the spoiler LED as the 3rd brake light, or else it'll look like a circus show when you brake!