[Nezil]

So I used to live in Korea, and my wife is Korean, so I can read a little. All over that naver link are hashtags:

#BMW, #M2, #제이아이사운드, #커스텀, #엠비언트, #라이트, #블랙박스, #시공, #일산카오디오, #수입차전문

which translates as:

#BMW, #M2, #J.I.Sound (presumably the installation company), #Custom, #Ambient, #Light, #Black Box (what Koreans call a Dashcam), #Construction, #Ilsan (a region just outside Seoul) Car Audio, #Import Car Specialist

Having lived in Korea, I know that DIY is not something that people typically do. There is no such thing as Home Depot or Lowes, and even Ikea offers assembly as a service!

With all of that information, this looks like it's a custom job done by J.I.Sound, and that's their business, so they probably wouldn't be up for sharing the method used.

I'd love to be wrong, but that's my take away from that blog...