R129 Mystery Radio Problem

[clarkei]

I park the car, remove the key everything goes off as it should. Then, and this is the mystery............the radio comes back on. Not sure of the time it takes between removing the key and it powering on again. Typically overnight at some point which makes anyone living nerby a bit fed up I imagine.

Could it be a problem with the ignition switch? Any ideas?


Thanks in advance of any clues