Normally this "DIN" connector should have all cable, but some unit need a separate power (always on) it's mainly for the unit require high-power (aka: lot of watts), if you want to be sure your "din" have power made a simple 12V tester with a bubble light with duct tape that should do the trick.
Before try on the DIN, check in the battery if the light turn on your "tester" it's ok go ahead better to look only for the + in the DIN mean grab the - in somewhere on the metal of the car (eventually try the ground of the antenna) , if you have power in the din two option faulty unit (or unit fuse broken) or no ground but usually the ground from the antenna do the job.
Voila voila
here you have the
DIN CONNECTOR PLAN 
