Blaupunkt amp instalation

I am thinking about getting a blaupunkt Sub and amp combo specifically this one

Blaupunkt THb 200A active subwoofer

Only thing is wiring it up to battery is putting me off , as running a cable from engine bay to back of car look's a little tricky.

However looking at the manual for octy the 12v (f35) socket on the back is fused for 30amps and the sub/amp draws only 10amp max. Could it be possible to use this to feed power to the amp ? or am I missing something here ?

Just to make it clearer I am talking about the 12V accessory socket in the boot