Electrics help please

[Hughandjen]

Hi all
Ive got a problem wiring the rover 75 seats in the Z3. Some people have helped with pictures but I am struggling to get them to work properly. What I have is as follows:

BMW CHASSIS SIDE
There are two connectors under each seat (see pic). I understand that one is for the motors (white one) and the other is for the heating elements (Black one) the wires to each are as follows:-

White connector
Brown ( thick wire I assume is earth)
Red/white (thick wire)
Purple/black (thin wire)

Black connector
2 x brown wires
White/green
White/red

ROVER SEAT SIDE
One connector that has the following wires:-
Black
Yellow
Orange
Orange/white

If I connect the wires as follows the motors work and I think the heat is going through the elements but not controlled by my heated seat switch:-
SEAT SIDE. CHASIS SIDE
Black and yellow wires - brown wire
Orange. - red/white wire
Orange/white wire. - purple/black wire

These are all for the passenger seat and photos below
Thanks
Hugh