Amazon had a great sale on the @Wolfbox G840S that I couldn’t pass, ordered the OEM bracket and the hardwire kit with it. Install was easy and straight forward. Little less than 2 hours in the Las Vegas heat.
Here’s a YouTube link I used as a reference. It’s easier to remove the spoiler (6 10mm bolts) and pop the cover then I used a small drill bit to feed the wire down and thru the rubber that’s on the right side and down into the liner then just feed the wire with the help of the plastic they provide. When you get over the doors just pulls the rubber down and keep feeding it until you get to the driver side airbag pillar, remove the cover and the bolt being careful feen the wire behind it and into the liner by the window and it will feed thru where the rear view mirror goes. I suggest order the OEM bracket to keep the install looking clean.
I used the hardwire kit which I ordered separately and on the far left side of the pedals there’s a big rubber grommet you can feed the wires to the engine bay. On the fuse panel the one on the top of my pic is the constant hot and the bottom the ACC.
Hope that helps but please watch the video!
Best of luck