Finally finished the installation of my Ambarella A7LA50 dashcam, so I thought I'd post the information I gathered along the way. Hopefully this will help someone in the future. I was looking for a neat and tidy installation, so wanted it mounted at the top centre of the windscreen for the best view. I also wanted it hidden from general view from the inside and outside, but still easily accessible. Finally after a little playing around I decided I could fit it behind the rear view mirror whilst leaving enough space for mirror adjustment. Next problem was getting power and having the power switched off with the ignition, I didn't want recording to continue 24/7 and flatten the battery. I needed to tap into the cabling somehow and the upper central console looked a good source. After a visit to a Toyota Garage for some tips in removing the light, I discovered it was just a matter of ensuring there were no bolts/screws holding it up by checking behing the light lenses (none found) and then levering the console out until the clips popped out. You can see here that my unit is just held in place the four pop clips (2 blue & 2 white clips in photo). Best method is to use a long thin plastic prise tool to lever it out, however I improvised with an ice scraper. The connecting cables are easily unplugged. From eBay I purchased a 12v DC to 5v DC converter with a micro USB plug on the end, suitable for running my dashcam.(£3.58 inc postage from a UK supplier) and also a few wire taps and spade connectors to spur off the power from the existing cabling in the roof lining.(£3.15 inc postage from a UK supplier) - Also known as T-Tap or ScotchLok Using a meter and probes I found that the black and white wire was common ground/negative and a blue wire had a 12v supply which was cut with the ignition (perfect!) These wires powered my rear view mirror auto anti-dazzle, so shouldn't cause a problem tapping into that. Press on the connectors onto the wires (using pliers), crimp the spade connectors onto the power adapter and plug in. Nice and easy, no soldering. After plugging it all in and routing the USB cable down the side of the mirror trunking, it was just a simple case of popping the centre light console back. Easy peasy, looks neat and works great!30 minute job from start to finish (including taking photos!)