Originally Posted by RandoCommando
The brake light is also a tail light, which is constantly on.
So you get savings from that.
And I always keep my brake engaged at lights for visibility of people approaching.
Not exactly. The taillight bulb has two filaments. The actual taillight is 5W. Applying the brake lights the second 21W filament, for a total of 26W. These numbers are from the factory service manual.
So the only significant number here is the 5W, as I find I often release the brake and actually go somewhere.