Not sure, it's become an automatism for me in a few weeks. But I still reach for the lights switch as soon as I get in and it's dark... and then remember there's no need for that anymore with the automatic lights.
2009 Insignia Sports Tourer / (EDS) Remap 202hp/475Nm / (OEM) DAB+ retrofit / (OEM) Foglights retrofit / (Focal) sound system