1996 Plymouth Neon

I HAVE ALWAYS MAINTAINED MY CAR REGULARLY, BUT I'VE HAD SO MANY PROBLEMS WITH IT. FIRST OF ALL, I'VE ALWAYS HAD BRAKE TROUBLE, SECOND: MY TURN SIGNALS WILL SOMETIMES COME ON WHEN I HIT THE BRAKES (OR SOMETIMES NOT AT ALL), MY DEFROST KEEPS BREAKING (ONLY VENT AND BI-LEVEL WILL WORK); MY HORN DIED FOR NO REASON A FEW MONTHS AGO, AND TODAY MY CAR WON'T START (I DROVE TO CHURCH, AND IT WORKED FINE, BUT WHEN I LATER TRIED STARTING MY CAR, IT WOULDN'T START. IT APPEARED AS THOUGH THE BATTERY WAS DEAD <EVEN THOUGH I DIN'T LEAVE ANYTHING ON. SO A FRIEND JUMP-STARTED MY CAR. IT STARTED, BUT ON MY WAY HOME, THE ODOMETER, GAS GAUGE, AND HOT-COLD GAUGES WERE FLUCTUATING UP AND DOWN, AND THE RADIO KEPT RESETTING CHANNELS. THE SEATBELT AND BATTERY LIGHTS KEPT FLICKERING ON AND OFF, AS DID THE CHIMES. WHEN I GOT HOME, I CHARGED MY CAR, ALTHOUGH I FELT CERTAIN IT WAS NOT ONLY THE BATTERY CAUSING THE PROBLEM. NOW, MY CAR WON'T START AT ALL, AND I HEAR A CLICKING NOISE (IF ANYTHING) WHEN I TURN THE IGNITION. THE GAUGES ON MY DASH MOVE UP AND DOWN (EVEN THE SPEDOMETER) AND YET MY CAR REMAINS STILL. THE DOME AND DASHBOARD LIGHTS FLICKER ON AND OFF, AND THE RADIO CHANGES STATIONS, YET RECEIVES NOTHING. IT SEEMS LIKE SOME MAJOR ELECTRICAL OR COMPUTER PROBLEM. MY CAR WORKED FINE (WITH THE EXCEPTION OF THE BROKEN HORN AND USUAL PROBLEMS, UNTIL TODAY. ALSO, AT MY 36000 CHECK-UP, THE " ENGINE" CHECK LIGHT CAME ON, BUT THE MECHANICS SAID IT WAS NO CAUSE FOR CONCERN. I HAVE HAD SO MANY PROBLEMS WITH THIS CAR. PLEASE TELL ME IF OTHER PERSONS ARE HAVING SIMILAR DIFFICULTIES. COULD MY DEAD HORN HAVE BEEN CAUSED BY WHATEVER IS MALFUNCTIONING NOW? ALSO, I HEAR WIERD CLUNKING NOISES MANY TIMES WHILE DRIVING, ESPEC WHEN DRIVING OVER BUMPS OR AROUND CURVES. MY CAR MAKES SQUEAKING NOISES LIKE A BIRD CHIRPING ALSO. I HAVE TAKEN GOOD CARE OF MY CAR, WHICH IS WHY NOW I AM CONVINCED THAT THESE MUST BE MANUFACTURING PROBLEMS. I HAVE EVEN COMPLAINED TO THE DEALERSHIPS. PLEASE HELP. *AK