EMERGENCY FLASHERS

I'M HAVING SOME STRANGE THINGS HAPPENING TO MY 94 850 TURBO VOLVO WAGON. ON SATURDAY MY BOYFRIEND DROVE THE CAR TO THE STORE ABOUT 2-3 MLES FROM HOME. AN HOUR LATER WHEN MY BOYFRIEND REACH INSIDE THE PASSENGER SIDE WINDOW TO UNLOCK THE DOOR TO GET IN, THE EMERGENCY FLASHER JUST CAME ON, AND WHEN I TRIED TO START THE CAR IT WOUND NOT START. AFTER MESSING AROUND AND TRYING TO GET THE FLASHER TO GO OFF, THEY JUST WENT OFF BY ITSELF, BUT IT STILL WOULD NOT START. THE NEXT DAY I WENT OUT TO START IT AND IT STARED UP JUST FINE. THIS MORNIG WHEN I PARKED MY CAR TO CATCH MY RIDE TO WORK, I OPENED MY DOOR TO GET SOMETHING FROM THE BACK, AND THE FLASHERS START FLASHING AGAIN. IT ALSO WOULD'NT START. AFTER FLASHING FOR ABOUT FIVE MINUTES IT STOPPED. CAN SOMEONE PLEASE HELP. I'M THINKING IT'S IN THE WIRING, BUT I'M NOT SURE.