When starting my RRS in the dark morning, I have noticed that all incandescent lights are waving/blinking. (dimming-brightening) About 1-2hz frequency. I'm pretty confident this is due compressor working and taking (pretty big) current. It stops after about one minute of driving, when compressor stops and then lights settle... I quess, since I really can't hear the compressor. It's almost new, btw.

Is this normal? Or could it be a symptom for something I should know? Anybody seen this same effect?

Battery is few months old, car cranks really well and no HDC faults etc. existing, so I think alternator is also ok.