Astra J wiring?

Hi Guys I'm looking to run a live feed (fused both ends) direct from the battery to the boot area on my Astra Sports Tourer to power a couple of radios. Would this be easy to do or does it come prepared ready for the for split charge towing electrics?

Many thanks in Advance

Cigarette lighter/power socket in the back?
Otherwise, not sure if you have power going to the back, adequate for you purpose, but unlikely.

With towbars you usually buy a kit that integrates into the exisiting wiring loom, it should contain all parts needed as the wiring systems on modern cars are very complicated.
Splicing into circuits can cause all manor of problems with can bus and bulb warning systems.
If its just the power you need then id do as suggested and run a dedicated fused power supply into the boot and put some 12 volt sockets in.