http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
If you dont want to or can't set up a backup camera this is the next best thing. Best $40 I ever spent. Install is simple. I used the DIY backup camera instructions. I would say this is easier since you not running any wires to the front. Sensors work great. They pick up the cement blocks they have at some parking spots and anything bigger of course. The speaker is small and loud. I hit mines in the trunk by the wheel well and have it on low and can still hear it clearly. I love this car just like everyone here but backing up is scary since you can barley see anything. This was a perfect solution since it didn't require any drilling or new holes.