hi, i'm thinking of adding a powered sub woofer in my trunk to run with my stock 6 CD radio unit. 1) does the stock unit have low audio outputs? 2) what's the best way to get to the back of the radio? I see 2 screws under the radio section, but that's it. 3) what's the best way to run a hot wire to the trunk area (to power the sub) should i go from the fuse panel inside the car or try to run a straight wire to the battery and drill a hole thru the firewall? 4) is it easier to run the wire along the door side or down the middle by the console? Any help would be great! Thanks.