I'm looking for a good back-up camera / screen that works well with the RAV4.

The dealer offered to install one but they wanted over $1400 (yikes). I wish I could find out what brand they use, but I couldn't get them to divulge that information.

I'm pretty handy, but I don't want to drill holes in the metal or do anything else that's likely to void the warranty. I'm open minded to either a monitor in the mirror or otherwise, and open to wireless or wired.

Thank you for any suggestions.