relay switch on 2003 BMW 530i

where is the relay switch for the a/c condenser fan located.

Asked by for the 2003 BMW 530i
not too sure on the relay at this very moment but there is a pressure switch
the switch is located on the a/c pipe itself with a black plug hanging off it
forget which line is was but within the RHF area
please ensure a qualified a/c handler has evacuated the lines before replacing if faulty.