Swapping red led for blue on doot pin

[Mk2_tel]

Do I need to remove the door card to fit these?
Or can I just pop out the plastic surround but I'm guessing these a plug which connects to the door pin to get the light to flash?
Also passenger passenger side dines not have a red light flashing so will there not be a plug if I wanted to put a led there

[godsANGER]

Do I need to remove the door card to fit these?
Or can I just pop out the plastic surround but I'm guessing these a plug which connects to the door pin to get the light to flash?
Also passenger passenger side dines not have a red light flashing so will there not be a plug if I wanted to put a led there

I believe its a door card off jobbie, to  have the LED on both sides you have to run power to the other side to make it work.