The Dashcam Store are a Austin, Texas-based BlackVue distributor in the US. They do neat dashcam installs at their shop, as well as neat videos of their installs. Here is a video of a DR650S-2CH dual-channel BlackVue hardwired with the Power Magic Pro in a red Subaru WRX STI.
In the short video you can see how they hardwired the dashcam, with the Power Magic Pro hardwiring kit cleanly tucked away in the glove box.
Whether you plan to install your dashcam yourself or have a professional do it for you, it’s a nice reference point for how it should be done!
Feel free to share this link with any Subaru WRX owner.
The Dashcam Store’s blog also contains tons of pictures of this install and multiple others in a wide range of vehicles.