What is this connector for...?

[Mohi]

While installing 6x9 speakers in my mates vz , i came across this yellow connector shoe .. Wasnt sure what is it use.. I got a vy II but dont have one.. Nethier did he knew about it.

 

[Munz]

could be rear parking sensor beeper plug, I know mine sits around there on the parcel shelf

 

[pau13z]

could be rear parking sensor beeper plug, I know mine sits around there on the parcel shelf

Just looking through the manual, looks like that's it.