2012 Prius C back up camera reverse signal wire

I recently installed a back-up camera and found this forum had some helpful information. The head unit of my new radio has the ability to connect to a back-up camera. It also has a wire for a reverse signal, which supplies +12 volts when the car is put into reverse. There are a number of ways to do this, this is just one. For the Prius C 2012 you can see the access hatch in an attached photo and a purple signal wire that I used in another photo. You will see a red probe at the purple wire I used to test the signal. There is a brown wire next to the purple that can be used as well but the purple was more accessible. I spliced the purple wire and connected the reverse signal wire to the head unit into the purple wire. I used a simple 6-12 volt light probe to ensure this signal wire only had power when the car was shifted into reverse prior to splicing any wires. There is a convenient grounding location under the piece of floor panel at the very end of the trim running along the floor on the left front floor. I used this grounding location with my light probe to test the signal wire. You should always test the wire prior to splicing. I may add a few more pictures of connectors to this post later. I hope this helps someone install a back-up camera in less time with less effort than it took me. Best regards.

 

No such luck for me. I had to go to Toyota tech info and pay for 2 day access. Figure out the wiring diagrams, then figure out where the connections and relays were located using the same general manual they provide. Finally after looking at the relay locations I found where the connectors were located. The wires in the connector feed the back-up light circuit from the connection near the steering wheel. I could have tapped the back-up light but I wanted to find a source closer to the radio. I found some information on here about a different Prius model and the location of the reverse signal wire was in a totally different location. I probed every wire in the floor connections to no avail and then realized I had to get the Toyota information. I spent the better part of day figuring all this out. Hopefully my post saves someone all that effort in the future.