Rear fog (brake) lights question

[JonD]

So I know how to turn on and keep the front fog lights on and at least on my car, both brake lights work as fog lights when you pull the light button again but it won't stay up, its just a spring action and returns. Does anyone know how you can make the rear fog lights stay on along with the front ones?

I noticed that an amber light comes on the switch just underneath the green one indicating the front fog lights are on, but as soon as the button is released the light goes off as do the rear fog lights.