2002 MERCURY VILLAGER Electrical System Problems

I TOOK MY CAR TO ALLAN VIGIL FORD IN FAYETTVILLE GA FOR SERVICE AND I NOT HAPPY WITH THE REPAIRS . FIRST , THE ALARM IS GOING OFF ALONG WITH THE HORN AT RANDOM .SECOND ,THE DASHBOARD LIGHTS DO NOT WORK . I HAVE TO USE A FLASHLIGHT AT NIGHR TO SEE WHAT SPEED I AM GOING .THIRD , I AM DRIVING WITH NO HORN . AND FINALLY ,THE IGNITION KEY DOES NOT LOCK OR UNLOCK THE DRIVER DOOR. .

WE PURCHASED A USED (28K MILES) 2002 MERCURY VILLAGER IN 8'06. AS I LATER FOUND OUT THIS IS A SISTER TO THE NISSAN QUEST. WITHIN 2 MONTHS IT STARTED TO HAVE PERIODIC STARTING PROBLEMS - MEANING ALL POWER SEEMED OK, BUT WHEN THE KEY WAS TURNED, ONLY A CLICKING SOUND WAS HEARD. WE DISCOVERED SOMETIMES THIS COULD BE CORRECTED BY OPENING & CLOSING THE DOORS, OR CYCLING THE LOCKS. AFTER SEARCHING THE WEB I FOUND OTHERS WITH WHAT APPEARED TO BE A SIMILAR PROBLEM AND WHAT OTHERS CLAIMED THE FIX WAS. IT SEEMS AN ANTI-THEFT IGNITION INHIBIT RELAY IS THE CULPRIT. IT SEEMS TO ME FAILURE OF THIS RELAY SHOULD BE BE IN A FAIL-SAFE FASHION. NONETHELESS, IS THERE A FACTORY TSB FOR THIS ISSUE FROM MERCURY OR NISSAN? IS THERE A PART AVAILABLE TO CORRECT THIS PROBLEM? ALREADY MY WIFE AND KIDS HAVE BEEN STRANDED DUE TO THIS PROBLEM...