In relation to headlights, I don't understand how if it is law in most states for you to have your headlights on if your windshield wipers are running that manufacturers don't make that an automatic feature. The idea (for those who dont know) is that if it is raining and you have your windshield wipers running, that you need to have your headlights on to increase your visibility to other drivers not your own visibility.
In terms of tail lights. Not everyone has a nice fancy car that informs them a tail light is out like most BMWs do.
2007 ///M Roadster Interlagos Blue & Dark Beige top over Light Sepang extended leather - RPI exhaust-- AFE Intake--DKF Hangers--Vibra Technics Engine Mounts--Cosmos Firewall Braces--BMW Strut Brace--Tekarbon CF Engine Cover--Aero Side Skirts--F10 M5 Knob--LeatherZ Mk4 Armrest--SmartTOP Roof Controller--Zeckhausen Racing CDV--DansDecals Reflector Decals--Clutch Stop--LED Trunk Light--Stubby Antenna