Problems going back to stock head unit

I put back in my stock head unit after a couple years with an after market unit and it says the mic is disconnected and the backup camera doesn't work. I'm pretty sure I got those connected properly, although I did need to splice the backup camera wires back together since I had to cut them when I went to the aftermarket hu to retain the factory camera. Maybe I spliced poorly but I doubt it. At the risk of looking dumb, what is this set of plugs? Do I need them? They've just been in my glove box for as long as I can remember. I don't remember them ever being plugged in. 2015 etune with nav and no jbl.

 

What does the back of the stock radio look like?

That looks like the harness that jumps between the factory radio and the xm/sirius/ Or Nav Brain.....

 

You may be right. Found this pic on Google and I'm pretty sure that's my radio. I don't think the harness was ever hooked up before. If it doesn't have anything to do with the backup camera or mic, that harness doesn't solve my problem I guess.

 

I’m no expert but that shit looks pretty important

 

Well one of the wires for the head unit had been pushed back behind the dash and I couldn't see it. Plugged that in and it all wOrks.