This sounds kind of stupid, but do the two dots and arrow on the AC/heat vents light up at night on the 100, 200 (1989 - 90) light up at night ? I just noticed last night that they don't on my car, although I thought that they did at one time. This is O ---- | | | >| | | | | ---- 0 the control that varies the amount of air coming thru'. Regards, Vikram.