e53 lumbar support switch

[Frozen]

hello all - i have a 2004 e53 (x5) and my driver's side lumbar support stopped working. i pulled off the seat switch side cover panel and discovered the 2 wires leading from the harness to the pin connector have come loose. the pin connector is cracked and i have purchased a new one. my issue is i do not know where the brown and red wire connect to. it is a 3 pin connector.

pin 1 = ?
pin 2 = not used
pin 3 = ?

i have included pics. can anybody help me make the connection? is it the same as on the passenger side. i do not want to blow any modules by reversing the wires.

cheers,
m.