Help upgrading a 2010’s 51883 to a 2012’s 57031

Hello,

I want to update my son’s gen 3 Prius 2010 radio (51883) to a 2012 base radio (57031). The old radio broke and I found a 57031 unit at a local junk yard for only $65. Not interested in spending $$$ on a fancy aftermarket unit that will get stolen. Please do not recommend cheap units that ship from over seas. I prefer a factory radio that I can source from Ebay if stolen within a week.

I thoroughly searched other threads but they had me confused because they were installing fancier units.

To be clear, these are the units I mentioned. These are the fronts,


and these are the backs,


Other threads mentioned adapter cables that can be ordered from Toyota, but I was not sure if my installation required the same models. I am showing both cable parts below,


And finally, one thread mentioned a wire hack needed for the antena and uploaded this diagram,


Those are all the facts I gathered. I trust myself that I can follow instructions if someone shares basic guidance for this installation. I have removed the head unit before just to explore the cable connections from the back of the radio. I only probably need the right cable adapters to make this work.

I know this quest for help is probably obsolete in today’s standard, but this is purely driven by money, safety, and just because I am probably too cheap.

Thanks in advance and hope not to receive too many critics of this obsolete upgrade.

 

So, after reading several threads I ordered the necessary cables to make the steering wheel buttons work. Everything seems okay, steering buttons work, except the volume.

I cannot get sound from my new unit. Any ideas? Please remember this is a Gen 3 Prius and not a Prius V like my avatar.

 

I unplugged the beige antenna amplifier wire mentioned in another thread and still get no sound. Not sure what is going on.

 

I had to return the unit. I could not make the music play. Pin 8 to antenna cable only produced a loud buzzing sound. After trying multiple times my dashboard displayed the triangle of death (orange triangle) and it scared the s*ht out of me. I also had an extreme hard time making pin 8 cable go back in the connector. I was very close to breaking the cable because once it bends, it would not go back to its original position. .

i also tried several YouTube video recommendations for wiring and could not make the sound work.

Final recommendation: don’t do it if you are an amateur.

I am grateful for everything I learned. And I’ve final request to Toyota, please make your cars more standardized for these connectors. This was ridiculously hard.

 

I never assumed anything. I knew it was different before starting this project.