Salvaging "back-up" cameras from cars?

[EDZIP]

Those factory back-up cameras should be getting more common in wrecking yards and was wondering if anyone has experience salvaging one? Would be great for trailer hitch alignment.

[fastacton]

I bought a cheap wireless backup camera from China and it works very well (I use it as my rear view mirror in my '51 Panel). I've had it for over a year with no issues. I don't think I'd bother going to the trouble of making a junkyard camera work in my vehicle unless I just had an earlier or lower optioned model that it would just bolt right into.