hey guys and girls i've just bought a t plate C200 elegance and it's developed a problem. the indicator keeps flickering like mad and sometimes it don't work at all? i've had the indicator stalk replaced but it hasn't cured it. the mechanic has told me it might be the SAM unit? any ideas?

if it is this, where's the best place to buy it? i'm based in the uk!
thanks in advance!