Hello (meldy?)
I asked our members they answered, by the order:
1) electric circuit:
2) another picture:
Our member write: need to install safe diode 1N6275 - for protect from voltage exceeding over 15v.
3) there are more pictures - how to unmount tail lights, try to translate:
Pull out the upper plastic cover gently (no screws, only pawls):
Right plactic cover: unscrew one screw, pull out gently:
Remove the right rubber with rear washer pipe:
He used the small mill-saw to open the plastic cover (instaed the knife for glue removing):
Another our member gave the path for searching the "tail" and "stop" signals: tail signal - from licence plate lighting, stop - from center upper stop-light of the 5th door.
Hope that help.
PS: if you can't see the pictures - you must to login, this pictures are from our forum attachements, accessible only after login.