Sounds like you blew a bulb... Its like $6 in the states for a new one.
One set of lights is always on when your lights are turned on, then when
you hit the highbeams, they switch to highbeam and the 2nd set turns on.
So it sounds like you need a new hi/lo light.
Now selling cars in Jacksonville, NC......
1985 Blue Camaro
1988 Brown Firebird
1988 Firebird Formula