My HU and xm tuner are both in this picture.

My XM antenna is in the center of the roof all the way in the back. It is barely noticable. It's the little black square on my roof in this picture.

I am still using the cigarette lighter charger for now so that I can switch it between vehicles. It is plugged into one of my aux inputs on the back of my HU. I have thought about hardwiring it and running all the wires completely behind the dash, but so far I have decided to leave it as-is so that I can swap it between cars without rewiring a bunch of stuff. All the wires currently run through a hole I drilled in the back to the thingy in the lower DIN hole.