I'm not sure anyone in a german forum can help you.
Your device isn't listed in ebay.de for sale in DACH.
Whats about the user manual from the K410?
You have wire label/descriptions?Otherwise you obviousliy have to test, which button on
your remote initiates the +12V on K410 wires. :-)
Seems to me you got over the hardest part
in finding the ZV lock/unlock wires.
You got some progress since your posting?