Great to hear that I only need to tap 1 wire! I'll try this when winter is over. Was there a lot of work for you to run the wires through the a pillar?Great writeup. Just did this to my wife's 2011 with OEM rearview mirror backup camera and nav. Couple tips to simplify the rewire:
1.) If you have factory Nav, the parking, vss, and reverse 12v is already wired to the 5pin connector.
2.) You only have to run the camera signal wire to pin 11 on the 20 connector plug. I tapped the OEM camera white wire, plugged the new line into pin 11, threw the car in reverse and the nav switched to the camera display. Easy! It still displays on the mirror as well, but thats not a big deal to me.
I wish the OEM camera had guides, but I'll settle for having it on the nav screen. Toyota should've done this from the factory instead of being cheap and having it up in the mirror.
I chose to tap into the camera line from the passenger side scuff plate rather than up in the mirror. Ran the new wire up behind the glove box and to the nav unit. Took about 5 minutes.Great to hear that I only need to tap 1 wire! I'll try this when winter is over. Was there a lot of work for you to run the wires through the a pillar?
link here http://forum.rav4driversclub.com/topic106.htmlCGND : camera supply ground on pin 21 of E54 (red wire)
V+ : camera video signal on pin 22 of E54 (white wire)
V- : camera video signal gnd on pin 23 of E54 (a screen/braid wire)
CA+ : camera positive supply on pin 24 of E54 (a black wire)
There is another connector (grey connector with 22 pins 6 connected) in the back HU area I think is setup for the camera but I'm not sure. If there is one thing I know about car manufactures they always have the wires ran in the car. So when it comes to adding options is just a few plug ins and it's done. The assembly lines cost way too much money to skip steps. Most American cars set bits in the various controller units (BCM, HMI, ACM) and turn the features on this way. It does not look like Toyota does this, at least not for the rav.