Front fog lights.


Hi. I know that this has been covered a lot (retro fitting front fog lights)
I have purchased the switch for front fogs, fitted the fog lights. My question is, for cars that left the factory with front fogs, do the front and rear fog lights work independently.? First pull of switch rear fog. Second pull both front and rear.? Have made a custom loom, all ready to wire up at the switch as my car doesn't have the multiplug in the passengers footwell. If coonected to the red wire with blue tracer front and rears come on together on first pull, there is a purple wire with a white tracer next to it, this appears to allow the front fogs to come on with the second pull as it should. Sorry to be a bit vague, but just want to get it right. Regards Memphis