That's the way to go! You can actually get/buy an extension and plug it directly to the cig lighter and it's on all the time when you drive- like having a rear window on our ELIO! You need to buy a dual cig lighter adapter.Nice, I like the solar charging and wireless nature, but not the price tag and having yet another app on my phone for just one thing. I will opt for a $50 backup camera with dedicated small screen and spend 30 minutes on the install, including tapping into the reverse lights. Scotchlok self stripping connectors make tapping into low power wiring a breeze. I wish I had found them years ago.