Back up cam. 2015 silverado.

[Steve2517]

I have a 2015 silverado lt crew 4x4. No z71 package. 4.2 inch monitor. I'm sitting in dealership now waiting on a wheel alignment for putting in from end level. I asked the dealership if they would reprogram my hmi my link and said no problem. Would be 102 dollars. Is this the right back up camera needed if I have the plug and play wiring near my spare tire. 22803702. And does anyone have a picture of where the junction box to check for existing wiring would be and maybe a picture of what I'm looking for. Thanks for any help. Don't wanna go without a camera with young children !

[Steve2517]

I've managed to find most of this info and the location of connections. How do you know if rest of wiring from back box to console is all there ? Anyone have any ideas of what wiring looks like. ?? Thanks.