But you should be aware that these bulbs can be optimized either towards maximum power, or in the direction of Long Life. Accordingly do not be surprised over a shorter service life of the Night Breaker bulbs you look.
A note on the extension of the service life (as described in part been to other suggestions):
Frequent switching on and off stresses any kind of lamp and voltage spikes definitely promote the rapid Lampentod! These occur when you start, but especially when the engine!
My advice therefore:
Automatic Light Control: OFF
First, start the engine, and only then turn on the light
When parking the car:
First, turn off the light, and only then switch off the engine
If this is too complicated, I recommend Longlife bulbs and al time a good trip - albeit with significantly worse light!
