Battery voltage whilst running only reaches 13.2 v

[Batrat]

Good evening I wonder if anyone can help ... my 61 plate 1.6 Tdci fiesta when engine is off reads 12.4v but when running only reads 13.2v but constantly .

dont know if same issue but high current drain items cause weird problems like electric windows come down fine but only go up a mm or two with a press of up button but then hear the switch click so have to release and do it again . 

Another odd is right indicator on wipers on press foot on brake can hear the ignition relay chattering but not when left indicator on 🤷‍♂️

Also with right indicator on the windows don’t even come down .

The above happen with or without engine running ...  so any help would be appreciated I changed the ignition relay no change and main battery no change 

[primus1960]

Check the earthing from the battery..?, and any other earths maybe battery is on way out?