I am looking at installing a sub and amp in my C250 CDI Sport 2012 Saloon.

How is this process achieved? Forget the actual subs for now, but I mean the wiring. I have the stock radio (Audio 20) and want to add a sub & amp.

I don't really want to run a cable for power from front to back, can I just use a capacitor from the secondary battery in the boot?

Also, which speaker cable do I cut in to and where is this located?

I would appreciate any help to point me in the right direction.

Many thanks,

Jamie.