Just send me an email address and will send pictures. I did not drilled any holes etc. Fixed with clear silicone. The signals are not modified, as delivered, they fit in to there. Pictures are too big to upload here.
I am now finishing. https://youtu.be/7XVKd9cCi5M
Solved
https://youtu.be/_n6CWDokgtk
So at the end I bought Oxford Turn Signals 7. These are "glued" with clear silicone, cable goes to back and then directly to front signals. To have proper blinking interval, use resistors. Incl. In the package. Signal is deeper in air intake, but has way...