Since you have a B6 with tip wheel, it will be plug and play.
For others with B5 or C5 this would be more work... while the S/C ring will still be fine in this case, these cars will have to add a MFSW control unit and do some rewiring to make it all work. The difference in wiring is detailed below. Again, B6 or B7 owners don't have to worry about this part.
You can view the wiring diagram for the steering wheel and control unit at:
http://webpages.charter.net/sheandlee/audiMFSW-CAN.pdf
Here's the pins that connect your wheel to the SC ring:
:arrow: T5d (5 pin yellow connector)
pin # - - - - - tip wheel - - - - - - - multifunction wheel
1 - - - - - Pin 4 seat heat switch - - - - - bus to control unit
2 - - - - - - - - Horn (-) - - - - - - - - - - - - Horn (-)
3 - - - - - - - - Horn (+) - - - - - - - - - - - -Horn (+)
4 - - - - - - - - J234, pin 34 - - - - - - - - - J234, pin 34
5 - - - - - - - - J234, pin 33 - - - - - - - - - J234, pin 33
Notes: J234 is airbag control module.
T5d/1 connection to seat heat in tip wheels: only for heated wheels.
:arrow: T5h (5 pin black connector)
pin # - - - - - tip wheel - - - - - - - multifunction wheel
1 - - - - - - - tip gear switch pin 4 - - - - - - - - -N.C.
2 - - - - - - - - - - KL.31 - - - - - - - - - - - - - KL.15
3 - - - - - - - tip gear switch pin 5 - - - - - - - KL.31
4 - - - - - - - 58s (for button illum) - - - - - - - N.C.
5 - - - - - - - - - - N.C. - - - - - - - - - - - - - - - N.C.
:arrow: T2bg (2 pin black connector only on heated wheels)
pin # - - - - - tip wheel - - - - - - - multifunction wheel
1 - - - - - - - - - - KL.75X - - - - - - - - - - - - KL.75X
2 - - - - - - - - - - KL.31 - - - - - - - - - - - - - KL.31
Notes: 75x is load reduction circuit. (Circuit not powered with ignition "OFF" or "START", only in "ON" position.)
Multifunction Control Unit Pinouts:
1: CAN L
2: GND (if tip controls included)
3: CAN H
4: N.C.
5: N.C.
6: K line
7: Tip gear selector pin 4
8: N.C.
9: N.C.
10: KL.31
11: Tip gear selector pin 5
12: KL.15
13: KL.30
14: N.C.
15: 58s (for button illum. splice into T32/20)
16: N.C.
17: For heated wheels only: Pin 4, driver's seat heat switch
18: Bus from steering wheel
For others with B5 or C5 this would be more work... while the S/C ring will still be fine in this case, these cars will have to add a MFSW control unit and do some rewiring to make it all work. The difference in wiring is detailed below. Again, B6 or B7 owners don't have to worry about this part.
You can view the wiring diagram for the steering wheel and control unit at:
http://webpages.charter.net/sheandlee/audiMFSW-CAN.pdf
Here's the pins that connect your wheel to the SC ring:
:arrow: T5d (5 pin yellow connector)
pin # - - - - - tip wheel - - - - - - - multifunction wheel
1 - - - - - Pin 4 seat heat switch - - - - - bus to control unit
2 - - - - - - - - Horn (-) - - - - - - - - - - - - Horn (-)
3 - - - - - - - - Horn (+) - - - - - - - - - - - -Horn (+)
4 - - - - - - - - J234, pin 34 - - - - - - - - - J234, pin 34
5 - - - - - - - - J234, pin 33 - - - - - - - - - J234, pin 33
Notes: J234 is airbag control module.
T5d/1 connection to seat heat in tip wheels: only for heated wheels.
:arrow: T5h (5 pin black connector)
pin # - - - - - tip wheel - - - - - - - multifunction wheel
1 - - - - - - - tip gear switch pin 4 - - - - - - - - -N.C.
2 - - - - - - - - - - KL.31 - - - - - - - - - - - - - KL.15
3 - - - - - - - tip gear switch pin 5 - - - - - - - KL.31
4 - - - - - - - 58s (for button illum) - - - - - - - N.C.
5 - - - - - - - - - - N.C. - - - - - - - - - - - - - - - N.C.
:arrow: T2bg (2 pin black connector only on heated wheels)
pin # - - - - - tip wheel - - - - - - - multifunction wheel
1 - - - - - - - - - - KL.75X - - - - - - - - - - - - KL.75X
2 - - - - - - - - - - KL.31 - - - - - - - - - - - - - KL.31
Notes: 75x is load reduction circuit. (Circuit not powered with ignition "OFF" or "START", only in "ON" position.)
Multifunction Control Unit Pinouts:
1: CAN L
2: GND (if tip controls included)
3: CAN H
4: N.C.
5: N.C.
6: K line
7: Tip gear selector pin 4
8: N.C.
9: N.C.
10: KL.31
11: Tip gear selector pin 5
12: KL.15
13: KL.30
14: N.C.
15: 58s (for button illum. splice into T32/20)
16: N.C.
17: For heated wheels only: Pin 4, driver's seat heat switch
18: Bus from steering wheel
