I just ordered the one Healyman suggested. I'm hoping it'll work as a backup camera. The only concern at this point is whether or how the reverse image will appear. My guess that it won't actually show a reverse image, unless the app has a feature for that, and that I'll have to get accustomed to that. If I can't then it's back to searching; maybe the Type S mounted on the toolbox? We'll see. At $50 this isn't a huge investment and if it doesn't work as a backup camera I have a couple other things in mind for it.