When I fitted mine I did the pin 4 link first.
It seemed to work correctly but I had only just obtained my VCDS and knew nothing. My first scan resulted in many faults but for this thread, here is the relevant report. For both of these I had "No Fault Found".
0E-Media Player 1 -- Status: Not registered 0001
1E-Media Player 2 -- Status: OK 0000
-------------------------------------------------------------------------------
Address 0E: Media Player 1 Labels: 4E0-910-111.lbl
Part No SW: 4E0 910 111 F HW: 4E0 035 111
Component: CD-Changer H43 0470
Revision: 00000501 Serial number: AUZ5ZBD1036835
Shop #: WSC 00000 000 00000
VCID: 1C37F845DF4EAAC1933-8049
No fault code found.
-------------------------------------------------------------------------------
Address 1E: Media Player 2 (R199) Labels: 4E0-035-785.lbl
Part No SW: 4E0 035 785 F HW: 4E0 035 785 C
Component: SG ext.Player H20 0850
Revision: 00000000
Coding: 010000
Shop #: WSC 00000 000 00000
VCID: 2B552B994AE05D79EA9-807E
No fault code found.
-------------------------------------------------------------------------------
Somehow I eventually managed to lose the "Not Registered". Cannot remember how I managed it.
And here are the current reports.
0E-Media Player 1 -- Status: OK 0000
1E-Media Player 2 -- Status: OK 0000
-------------------------------------------------------------------------------
Address 0E: Media Player 1 Labels: 4E0-910-111.lbl
Part No SW: 4E0 910 111 F HW: 4E0 035 111
Component: CD-Changer H43 0470
Revision: 00000501 Serial number: AUZ5ZBD1036835
Shop #: WSC 00000 000 00000
VCID: 1C37F845DF4EAAC1927-8049
No fault code found.
-------------------------------------------------------------------------------
Address 1E: Media Player 2 (R199) Labels: 4E0-035-785.lbl
Part No SW: 4E0 035 785 F HW: 4E0 035 785 C
Component: SG ext.Player H20 0850
Revision: 00000000
Coding: 010000
Shop #: WSC 00000 000 00000
VCID: 2B552B994AE05D79EBD-807E
No fault code found.
-------------------------------------------------------------------------------
OK none of this really helps but it might help someone to understand better.
