Hi mate, the car originally had the stock 86120-YY130-D unit with Bluetooth, radio, reversing cam, etc. I bought the GPS unit PZQ60-00535 from a member on here sportivo2007 then did the install. Because the unit is a couple of years newer than the car, the wiring is somewhat different from the previous unit so I used a few harnesses and parts from Toyota: PZQ60-00161 - adaptor for radio PZQ60-00190 - modified aux port harness for 4 pin aux audio port near aux power port (modified this so that the other wiring from the rest of the car connects directly into the back of the unit) PZQ60-00141 - modified for the 16 pin plug I used to hook up the reversing camera to the new radio. Also used the 28 pin plug and modified. The rest of the harness isn't used, just those plugs. 8619053010 - 3.5 mm aux audio input port with 4 pin socket used next to aux 12 V port. Some pics of the modification/install: https://plus.google.com/u/0/photos/101266930282219962116/albums/5957396221507915073 Early pics with PZQ60-00141 harness, steering controls worked, no camera, no speed sensor cable, no reverse gear detection. https://plus.google.com/u/0/photos/101266930282219962116/albums/5960025354067547905 Later pics with modified PZQ60-00141 harness with camera, speed sensor, reverse gear detection all working. https://plus.google.com/u/0/photos/101266930282219962116/albums/5961255947418734385 Most recent pics with modified PZQ60-00190 with support for all the previous and adding connection to added 4 pin 3.5mm aux audio input near aux power port. I found the pinouts for the different units on the following pages and modified accordingly: http://au.toyotaownersclub.com/forums/index.php/topic/24580-reverse-camera-on-my-new-head-unit/page-2?& http://au.toyotaownersclub.com/forums/topic/41311-toyota-navigation-pin-out-model-pzq60-00531-pzq60-00532-pzq60-00533/ Thanks to sportivo2007 for all his help/research on getting this running.