12v 3157 WHITE Canbus LED brake/tail/fog/park light bulb

This 12v T25 3157 WHITE Canbus LED brake/tail/fog/park light bulb is for use in brake light and certain park/fog light uses in Japanese vehicles.
It is a double acting bulb – half light is constant (for tail light) and then full power (for brake light) once the brake pedal is applied.
For sole purpose brake/tail RED lenses we recommend using the Chrysler, GM, Ford, (Domestic Trucks and Cars) VW
Fits manufacturers part numbers 3057, 3157, 3357, 3457, 4157 P27/7W, NARVA 47534
GM OEM Part number: 12450064, 12450108, 12450182, 15233607, 15806441, 15855631, 1999367, 21994812.
Email us or call us on 0740962152 to find the bulbs for your car.
We need Make, Model, Year and preferably Series.

It is best to use Red bulbs behind Red lenses?
This question is asked more than any other with regard to brakelights.
Turns out that Red light passes unfiltered through a Red lens whereas White light must be filtered and therefore loses strength.
You will notice it more at night with Red LED bulbs, the colour is much much richer Red than other vehicles with incandescent bulbs.

T series wedge bulbs explained:
Yes it seems confusing, thats because it is.
T series numbering came from the diameter of the glass part of the incandescent bulb.T25 series:

3156/3157: Replaces 25mm glass globe type
7440/7443: Replaces 20mm glass globe type
( Both above lamps all have the (16mm) large wedge base.)

T10 and T15
Both of these have the same 9.5mm small wedge base.
The T10 version is generally used in dashboards and other small recessed parts of the car.
They generally aren’t used as reversing or parking lights.
The T15 version (which originally was a larger 15mm glass bulb) was a larger incandescent bulb and therefore as an LED equivalent we use the T15 LED lamp.
We enlarge the bulb’s diameter & power for the T15 wedge accordingly Code #194 comes from the GE number for T10mm glass globe lamp.
Code #906, 912, 921 …comes from the GE number for T15mm glass globe lamp.