All. Sorry have been out of town but would like to respond to your questions. I do not have pictures of the install but can come up with a few as I am planning on changing my wireless charging tray from the armrest to the console bin below the dash. The armrest charging tray works fine, but does not fit my Iphone 12 with a otterbox case... Also it is high and makes stuff slide off...
As for the wireless carplay, I will add more to this tonight but the basics are:
1. For whatever reason, I could not splice and extend the data cable. I thought that it runs through a circuit that having 2 caused the issue; however, even when you simply try to extend the cable with out splicing, it does not work. Therefore, I spliced the charging cable (pin connector with 3 thicker wires only.
2. I bought a second USB port and spliced that into the charging cable (pin 3 wire) and left the data cable alone. I shaved down the box / case of the usb / data connector so it was as small as possible and placed in behind the dash, behind the empty port where some trucks have a 110 volt plugin. I then used the new charge only port in the dash. You can only connect carplay with wifi / bluetooth if you do this as the charging / data usb port will be behind the dash. This is fine with me.
There is something about the wires used on the data cable that would not allow me to extend. At some point, I may purchase the wire harness kit for the infotainment system, I think the harness is about $70, and see if the actual MFG cable will allow me to extend.
According to Chevy, the 2021 models have a different code set and electronics / computer that does not allow you to use the third port mini usb connector to add an additional usb / data port.