If you wish, you can power the Drive+Play unit with the cigarette lighter cable supplied, or you can hard-wire it directly to a 12V power source, which is the way I opted to go. The C5 fuses are located under a removable panel on the passenger-side floor. On the inside of the panel cover, the fuse layout is listed along with a location diagram. Two electrical feeds are required: a constant 12v to retain programming, settings, and preference memory for the Drive+Play brain (I used fuse No. 7-the cigarette lighter), and a switched 12v feed that turns off when the ignition is switched off (I used fuse No. 10-windshield wipers); it's this latter connection that actually powers the Drive+Play unit. I connected the black ground wire to the metal frame superstructure of the console assembly.