Fitted my dashcam today and thought I'd write it up. There are various ways to hardwire but I tapped into the cig lighter so it comes on/off with the car.
Parts
Dashcam
USB cable
Piggy back fuse tap and fuse for the camera (I used a 3 amp fuse) -
http://www.ebay.co.uk/itm/251650492205
12v to 5v USB step down module -
http://www.ebay.co.uk/itm/161152971980
Various tools (torx screwdriver, trim pry tool, zip ties)
Installation:
Drop down the glovebox by pusing in the tabs on the side, this will give you access to the fuse box, locate the cig lighter fuse (its the yellow 20 amp that is lower down that the others in the same row)
Remove the fuse, plug the dashcam fuse into the fuse tap in the slot inline with the live cable and the 20 amp cig lighter fuse into the other slot. Place the fuse tap back into the car
Crimp the live cable from the fuse tap to the live cable on the USB module and attach securely to the car using double sided sticky pads and zip tie. I took the side dash panel out for easier access and for a place to mount the module. Attach the ground cable to screw circled.
At this point I connected the dashcam and started the car to check both the dashcam and cig lighter worked.
If you haven't done so already, mount the dashcam to the windscreen. Plug in the USB cable to the dashcam and slot the cable into the headliner and run along to the passenger side A piller.
Continue to slot the cable along the top of the A pillar trim and into the door seal, it is tight at the top of the pillar, I got a bit frustrated and ended up pulling the pillar out.
Carry on running it all the way down to where you put the usb port. I ran the cable and port to the panel where the footwell light is so I can just unscrew the panel to access it.
Pic of it from drivers side and outside
The longest part for me was aiming the camera. The field of view is so wide and I wanted to mount it as high and as close to mirror base as possible but because the mirror base is so big it was getting into the camera shot.
Turn on, test, and enjoy!