Hi Ian,
I extended the video simply with a ready made cinch cable like this
www.amazon.de/gp/product/B00SWYTS18/ref=..._title?ie=UTF8&psc=1. The reverse gear signal was easy to extend with wago clamps and a simple wire. The challenge is finding a way for the cable to the back. I went down the step on the right side in driving direction (might be right in your car) and then under the car via the hole for the electric step, than partly covered by a installation plastic pipe and partly inside the cars body spars back to the bumber. There in the corner of the car (D-Pillar ?) you can go all the way up to the reverse light. Check YouTube to get an Idea what I mean.
ATOTO has a more or less good support and you will find all info in the box or on their home page after registration.
BTW I can also monitoring my LiFePo battery and the OBD Dongle via the radio. The only backdraft on the display is, that the resolution is a bit to high in native adroid mode, meaning that the fonts and icons are too small. Maybe there is afix but that didn't really bother me until now because 99% i use Android Auto and there everything looks perfect.
Go for it. You will grow on the way
.
Axel, Columbus 540D AD, 150PS Bj 2018, Markise, 100W Solar, 176AH LiFePo, 16" Alufelgen, Nokian AT, SMV Luftfederung hinten, verstärkte Federn vorn, BioToi Trockentrenntoilette, ATOTO S8 mit Rückfahrkamera