Auto wipers and Auto lights faults?

My son's 2004 Megane has similar problem with passenger window lowering of its own accord - we also took door panel off to raise the window and blocked it so as with other owner unable to use window. However since this has been done the auto wipers do not work and also the auto lights do not now work and service light comes on and off - anybody had this problem? If you have any input on resolving will be very much appreciated.