Special thanks to this thread! I just installed a factory nav unit in my MR2 Spyder by using a 2015 yaris head unit (pt546-52150) and a 2012 prius extension box (pt296-47120). I am curious if any iPhone users can wirelessly connect data to the radio without using the usb. I suspect that since this an older extension box that I have to use the usb. Are there any of using pt296-47130 or pt296-47141 and an iPhone?
