I just installed a radio out of a 2016 Scion FRS into my 2001 4Runner with navigation and a backup camera. The only difficult part of this was I had to trim the radio panel on my 4Runner as the Scion radio was bigger than the stock radio and I had to cut a slot on the back side of the radio faceplate so it would clear the tabs on the dash where the radio panel clips in. I also had to grind off the front of my radio brackets as they hit the back of the faceplate of the radio.
The backup camera came with the correct connectors, plug and play. You just need to find your reverse wire. I found mine under the driver’s side kick panel, it was red/yellow. I have also seen a post about it being behind the instrument cluster, the link is below. I installed the camera on the license plate trim panel.
Backup Camera Reverse signal wire
If you get one with the navigation module, you plug up the USB Toyota adaptor to the navigation module, otherwise plug it in the radio. The VSS wire is located behind the glovebox. This is only used for navigation. It is a green/orange wire in the 22 pin connector. Number 6.
The parts I used
PT546-00160 – 2016 Scion Radio. Mine had navigation.
(12) 6mm washers- I used 3 each under the radio bracket at each bolt where the radio bolts to the dash to bring the radio forward. It is deeper than the stock radio and the wiring harness did not have enough room behind the radio. The three washers were 4.8mm. You can also use nylon spacers, but I had these on hand.
PT546-00120-AD – Antenna conversion harness
PT546-74120-MC- Microphone
PT546-00120-CH - 28 pin conversion harness
https://camera-source.com/2016-scion...amera-kit.html
A back up camera that works with the stock Scion radio. The Scion radio outputs 5 volts for the camera rather than 12 volts like aftermarket cameras.
Metra 40-GM12 GM Antenna Adapter
Metra 40-UV43 Male to Female Motorola Antenna Cable
Goliton USB female Retention Adapter for Axxess AX-TOYUSB Select Toyota and Lexus- this was for my USB. There is an OEM Toyota UBS adaptor you can use, but this is much less. If you want to use the OEM, here is the part number for it and the USB port for a stock look. This is what I did when I installed a nav radio out of a 2013 Corolla in my 4th gen 4Runner.
86190-0C020 USB-mini jack
PT233-47100-WH USB harness
PT546-00120-US USB conversion wiring