I installed a Kenwood TM-V71A in my X, the radio is far back under the deck (5-passenger), along with a WiFi router and Linux computer. This is all powered from the brake controller power feed, which is has a 20-amp fuse and is always-on. The control head fits very nicely in the cubby with plenty of room. Easy for Tesla to remove the cubby to gain access to the two programming cables for the car.
I am going to have to study your antenna Installation though. How did you get through the glass on top? IOW, I don't understand how you got from the second photo, to the third.
So DCGOO, I'm in the rear center of the Falcon doors, almost above the small rear interior LED dome lights. When I pulled down the head liner there is a slot for the retainer clip and a round hole to assist in the positioning of the headliner. I used a 1 1/4 reaming tool to enlarge the guide hole. I measured several times and drilled a 1/4 hole through the aluminum and then through the thick black plastic panel between the Falcon door hinge area. The antenna mount is a 2" long x 5/8" diameter NMO mount / PL259 thick roof from American Radio Supply. The inside is silicon sealed to the aluminum spine and the NMO O ring seals to the black outside plastic.
DCGOO, you are not that far from Cleveland and I up-fit public safety vehicles. Having an outside dual band antenna really is a must. If you want, I would be willing to assist. Of all the vehicles, Explorer, Charger, Tahoe, Crown Vic & Cadillac SRX, this was the most difficult, but fun at the same time!!
The antenna mount is a 2" long x 5/8" diameter NMO mount / PL259 thick roof from American Radio Supply.
The inside is silicon sealed to the aluminum spine and the NMO O ring seals to the black outside plastic.
Whoa! I would be a little bit scare making any hole into the roof...
I was considering using as a base a suction cup used in house construction to carry and hold glass windows during the installation.
This would not be as clean, especially because I would need to run the coaxial outside, but I might be able to drop it just behind into the hatch.
What I wonder is if there would a need to have a metallic ground surface connected to the antenna?
Thanks, 73, 88, and 161.