Yes and no you dont .Would be a stupid idea
Would also be a lot more work to run wires out of door and into footwells when you just have to hook them up in the door
I found it paid on the fronts to add about 250mm of wire to make it easier to fit them in the doorcards after doing the wiring and also t run it where it wouldnt get pinched when door card is reattached
Do it the way Tigger shows . LEDs may not even be in the door controller modules. The boot light is a different to the door lights. THe one in the taildoor is the same as door lights and simply plugs in
Here are pics of the clips holding the door cards on in right photo
When doorcard comes off they usually look like the righthand one and then to put them back need to be opened to be like lefthand one.
To do so you lever it apart ABOVE the little washer to push the prongs over the thick piece of the centrepole
See how to remove doorcards here
Front Door Trim Removal – Volkswagen MK2 Tiguan – AutoInstruct