smoke in dash

[Randha]

i have change the lightswitch with a new one,the light on the dash worked and then suddenly the smell and smoke again white smoke of burnd plastic between a minute,it came in de area of the left upper speaker,i disconnect the batery aggain, but coud not trace it down,with disconnected switch,no smell and smoke,high beam lights works only wit handle in flashing mode,it seems to me the whole dash have to be taken out.....to look the wiring for damaging.