Knight Rider lights were not sweeping like the MK7.5, they were alternating left and right no?

I think what the OP means is this mod, which doesn't need any expensive hardware, other than a cheapo OBDEleven dongle (or ask soemone with one to do it as favour:
https://www.youtube.com/watch?v=m2AFj9yyT7UA 1 min mod really:
Select -> 9 Central Electronik -> Security Access -> 31347
Adaptation -> Channel: (4) Leuchte16BLK SLB35BLK SL KC9-Lichtfunktion A16: Set = Blinken lins Dunkelphase. (Default:Blinken Links Hellphase)
Adaptation -> Channel: (4) Leuchte17TFL R BLK SRB3TFL R BLK SR KC3-Lichtfunktion A17: Set = Blinken rechts Dunkelphase. (Default: Blinken rechts Hellphase)
Tried it on mine and was funny but I want to check whether it is legally ok before I leave it permanently on.