Robstelly

SKODA FABIA COMBI 1.2 HTP 2003 Power steering stops working when I go above maybe 85km/h or so, usually this is immediately after reaching this speed, and when the car reaches speeds below around 10km/h or stops, the power steering suddenly works again until again reaching the higher speeds. When I go consistently above 110km/h the dashboard lights start flickering and turning off momentarily, maybe after 10 to 20 minutes, the parking brake red warning light will flash, followed by three beeps. If I continue driving at these higher speeds the ABS and parking brake red warning lights will continuously turn on and beep, and the speedometer and tachometer will turn off. There is however no change to the car's on road behavior at all when these things happen (except the lack of power steering ofcourse), acceleration and braking works fine, in-fact when this started happening I was 100km's in a 1200km journey, so I did 1100km's on a highway without an issue and then some 300km's a day later. Looking into it I think I might have an issue with "load sense (dfm) wire" or the alternator, does that sound about correct? I have seen some posts on this forum, but can't seem to find any diagram or guide to be able to find the DFM wire, could anyone help here?