Fitting a dash cam on a Jaguar I-Pace is moderately easy.
For a start there are 12v feeds in the overhead console, one 12v always on and the other goes off when you lock the car. (It is the interior lighting circuit!!)
You need to go the
www.powerfuluk.com
Entrer Item Part No. EWL200-Tap-Loom
or Part No. EWL303-Kit if your dash cam is powered by USB (5v)
This gives you an always on feed. I've used this for months with no appreciable 12v battery drain.
This for the New Defender but fits every JLR vehicle from the RR Evoque onwards including I-Paces, F-Paces and E-Paces.
I'll nag Simon at Powerfuluk to add it to the Jaguar listing!
If you really want a feed that does go off then with that same loom (USB or 12v) tap into pin 1 feed instead of the pin 6 feed used.
So Pin 1 is 12v and goes off when the car is locked
Pin 6 is 12v all the time, never goes off.
Pin 4 is ground (-ve) There are other pins that are ground but Pin 4 is the one I use.
The over head console is very easy to get into, a trim tool makes it VERY easy, and there is plenty of room above it to store spare cable!
Follow the guides on PowerfulUK.
The cable to the dash cam just need to be pushed down to the windscreen by gently pulling the head lining to get the plug through, which is fairly pliable. There are some points around the edge that it is held up by magnets!
This is so much easier than hiding cable behind A pillar trim etc.
There is absolutely no need to find a way to the cable to under the rear seat fuse box!!
Be prepared that you will get a very iffy GPS signal to the dash cam if it is a variety that has GPS speed and location on it.
The interior of the car is a very good Faraday Cage because of the windscreen and roof head and UV coating. Well documented!
There is a very simple cure for this.
Buy from Amazon a GPS repeater, about £30. Powered by USB and you put the antenna under the wiper trim in the bonnet. The receiver up in the space in the overhead console near the dash cam. Simples!
https://www.amazon.co.uk/gp/product/B01FCY8B2M/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
Stay safe
Ian