Rear camera wiring for dash cam.

[Hairyfool]

How easy is it to get a route through to the tailgate conduits? I need obviously to avoid the curtain airbags so need to get behind them.

 

[Alb]

Routing the cable wasn't too difficult but I found the conduit bit hard work.
When you are planning this, think also about exactly where you intend to lose the excess cable.
I assume you are talking about an MG5 even though you have posted this in the ZSEV section.

 

[Hotlush]

This video shows the process. In lots of detail...