Hi… I need some technical assistance on my R129 '93.

From several MB forums I see posts that claims that the R129 is born with cruise control if it has ASR. Mine doesn’t have the control arm, so is it possible just to buy such and then have it connected somehow, and have a functional cruise control…?

If so, could somebody advice me how or let me know where to find the information, how to connect it and probably the MB part no. for the control arm…?

Rud