Peugeot 206 - Indicator / Lights ?

My 52 Plate 206 has STUPID automatic sensor for the lights. I will indicate and it will stop indicating (stalk still down) and then my lights come on i will tap the stalk and my lights go off and it indicates again (very dodgey as ppl think im flashing them to pull out!!!) How ever this does not happen when i turn my lights on manually! Also when my lights are on manually and the engine is off and i open my door there is no buzzer to say my lights are on should there be (as this results in my flattening my battery... :-/) Also my light come on when it sunny and stay off when its dull? I have been adivised to buy a new stalk should this resolve this as they are about £200.00 i want ot be sure!?!? HELP PLEASE!