I agree 180 but most info is for vw/audi which is plug and play or other models w/ flasher module/relays; I haven't been able to find any r170 specific or anything else other than that link I posted from pelican/peach parts and I believe that has a separate flasher module so it's easier to interrupt the signals; I'm still working on it and I posted on some mb forums that I used to frequent when we had the "other" benz.

Tim