For a wireless Android Auto adapter I've used the Motorola MA1 for about three years now. It's easy to set up and works pretty well although it does have an occasional glitch. When it acts up, which is very seldom, I just unplug it, plug my phone back in to the USB plug, and once the Android Auto starts working again, just unplug the phne and plug the adapter back in.
I bought mine on ebay and within a couple of months it quit working. I contacted Motorola and they sent a replacement within just a couple of days and it's worked well ever since. Just do a search on ebay for the Motorola MA1 Android Auto wireless adapter. I would recomend that you buy a new one in case there are any problems with it so that it has a warantee. Also this only works with Android devices.
One more point, this is only a wireless adapter. You need to be able to use Android Auto with a direct wire connection in order for the adapter to work.
Good luck, Rick Johnson
