How-to LED rear reflectors

[harry_g]

Hi. I dont mean to sound silly because it may be obvious but im new to this and have just recently purchased my astra.  just wanted to aSK how did you wire the led to the fog light switch and also how did u wire the second reverse light? would i need to purchase another bulb or is the difference just the way it is wired. And what about the colour of the plastic in front of the original rear fog light does this need to be changed?

I really want to do this but am not sure how to connect everything