well, perhaps the flasher relay is not the cause of the problem i'm having: here are the symptoms

the handbrake warning lamp is illuminated
there is a moderately soft buzzing whenever the car is on - unless a turn signal is on (then the light goes off).
The buzzing gets louder (slightly) when i depress the brake pedal

Could this be low brake fluid?

I should really get a manual so I know what all the warning lamps indicate.

Thanks guys