I watched that video before I installed mine. It was very helpful, but still left a bit to be desired.
Mainly, I have not see any instructions anywhere (including that video - he broke his) on how to get the little trim piece that is just above and behind the rearview mirror out without breaking it.
I got mine out without breaking it, but with no thanks to any help from anywhere EXCEPT for seeing in that video how the piece is actually held in. That was definitely key, so props to that video for showing that.
The only tools I used for the whole install were a wide slotted screw driver, a small, thin slotted screwdriver, and a 10mm socket and ratchet.
The are 4 tab hooks that hold that trim piece in. I used a very skinny slotted screwdriver to stick in the crack where each tab was and just pry a little to release the hook. 4 times of that and the piece came out without breaking. I had already popped the big trim ring out before doing that, so I'm not sure if my technique would work with the big trim ring still in place or not.
I used the wide slotted screwdriver to insert into the slot at the front right corner of the big trim piece and twist to start it popping off. Once started, it was easy to get it the rest of the way off. And once the front, small trim piece is out, the big trim ring comes right off.
To route the Ethernet (aka RJ-45) cable, I used the small slotted screwdriver to pry out the two panels that are on the driver's side grab handle. Then, the 10mm socket went in to loosen the two bolts that hold it on. I didn't remove the handle or those bolts. Just loosened them up good.
Once that handle was loose, it was easy to run the Ethernet cable. I plugged it into the power adapter and into the OBD II port first and then routed the cable from the bottom up. With the grab handle loose, it was easy enough to push the cable in behind the moulding/trim/weatherstripping without loosening it or pulling it out at all. Then, it just pushed in between the ceiling and the headliner at the top of the windshield to get it hidden all the way over to the rearview mirror area. So, really, to run the Ethernet cable, it was just popping off the bolt covers on the grab handle with a small screwdriver, loosening the grab handle bolts, and that's it as far as tools needed.
Other notes:
The rearview mirror can just be pulled to pop it right off the ball of the mounting stalk that is on. But, I don't know if it needs to be popped off or not. I did pop it off and I think it probably makes it a lot easier to get to the area where you insert the small screwdriver in order to release the tab hooks that hold that small trim piece on.
However, getting the mirror to pop back onto its stalk is a huge pain. Knowing what I know now, I would definitely try to get that little trim piece off first without taking the mirror off its stalk.
The stalk that the mirror mounts on is, in turn, easy to pop loose from where it is attached to the rest of the truck. I accidentally did that, too, when trying to put the mirror back on the stalk.
If you do that, to put the stalk back on its mount to the truck, you turn the stalk 45 degrees (either direction) from being straight up and down. Then, push it onto the nut that it mounts on. While pushing it, you turn it to straight up and down and it locks in place. You have to push hard while twisting it. And, you have to push straight or it won't grab on and seat properly.
I got mine on and then tried to put the mirror back on the stalk and couldn't do it. I had to take the stalk back off its mount and pop the mirror back onto the ball on the end of the stalk first, then re-attach the stalk to the its mount with the mirror mounted to it, which just made it that much harder. I was really worried about breaking the LCD screen in my mirror while trying to push it back onto the ball, but I got it on without breaking it.
Still, all said, the whole install, from scratch, took me less than 1 hour from parking in front of my garage to driving way with the Comma working.
