Key Operated Lighter

I got my dad Sirius for Christmas. I installed it for him today. I wanted to tap a new cigeratte lighter plug into the key operated one and plug it in there behind the dash. BUUUT, there's 3 wires. Which do I tap into? I need hot and ground. They are wierd colors. Thanks

Why not just get an adapter that plugs plugs into the orig. outlet and splits into 2 or 3 outlets? You can get them in most auto parts or electronic stores.

Why not just get an adapter that plugs plugs into the orig. outlet and splits into 2 or 3 outlets? You can get them in most auto parts or electronic stores.

I want the connection completley hidden. Nice and clean like