Help with au2 forte please!!

[fordperformance]

Last night i was driving and my left headlight went out and so did the instrument panel lights for about 5 seconds then came back on and the whole time engine kept running then the battery light came on and stayed on. I got back in it this morning and it started fine but the battery light came back on and the windows where moving really slow and everytime i went around a corner or hit a bump the radio cut out then came back on, so when i got home i checked the battery connections and they where fine... i checked the battery water level and it was fine too.. so i tried to start the car again and it wouldnt start all i got was about 5 clicking sounds from the engine bay ( kinda sounded like the starter motor engaging but not turning the motor ).. what i wrong ?? any help would be great thanks... oh and i took the globe out that burnt out but havent replaced it yet... does that have anything to do with it ?.