I had to have a new roof aerial fitted last week (including mount). I'm not sure exactly what they changed, whether it included having to access behind the radio but since last week I noticed that the left speakers seem a bit temperamental and the remote locking seems to not receive intermittantly. Are there any common shared connections etc. here? Presumably the remote locking doesn't utilise the radio aerial? I'm guessing this is coincidence or they may have disturbed the speaker wiring?