Indicator lights problem with Berlingo

[MalcolmY]

The indicator lights have suddenly started behaving randomly, flashing at odd times without being activated by me. I have taken the vehicle to a garage and they say that a new part is necessary but will take three days to arrive. Does anyone know what this part is and could I fit it myself, or is it possible there is just a loose connection somewhere? (I've googled various sites and can find no mention of lights problems on Berlingos)

[nalla]

possibly the indicator/light stem it happened in my xsara its a wee bit tricky but remove the plastic cowling from behined steering wheel and remove the stem