If you can code the 2nd/3rd digit in #17, channel 19 to 1 then you should get DIS functionality and only need to add the wiper stalk.
STG 17 Channel 19
x?xxx: Bordcomputer
0 - only level 2
1 - level 1 and 2
xx?xx: Driver Information System
0 - DIS (9Q2 or 9Q4)
1 - no DIS(9Q3)
STG 17 Channel 19
x?xxx: Bordcomputer
0 - only level 2
1 - level 1 and 2
xx?xx: Driver Information System
0 - DIS (9Q2 or 9Q4)
1 - no DIS(9Q3)