I recently installed a block heater on my 2012 Prius C, so I put together a short video showing the steps involved. Installation is pretty straightforward and doesn't require anything fancier than a 14mm wrench, so If you're looking to get this accessory and are willing to get your hands a little dirty then you can save yourself the installation cost. Click the link below to watch the video on Youtube: 2012 Prius C Block Heater Installation