Citroen Xantia – Refurbish radio remote control

Hello, I drive a Xantia X2 1.8 16V where unfortunately the remote control of the central locking system no longer works. I changed the battery and tried several times to re-learn the remote control, unfortunately without success. I bought a universal remote control at ebay and wanted to clamp it to the ZV control unit. So I removed the glove compartment, got the control unit out and now I can’t get any further. I quote Xantiarookie from the citforum: These are: On the black plug: Pin 2 and Pin 10 for the turn signals. Pin 13 mass. Pin 1 continuous plus. On the yellow plug: Pin 4 open. Pin 17 close.http://picload.org/thumbnail/iaaiwio/img_20150509_181214.jpg According to the so-called manual of the remote control we have these plugs here. So I need Brown for the turn signals(on Pin2 and Pin10), Red for 12V+(an Pin1) , Black seems to be mass (Pin13). The top 6 cables are explained below:http://picload.org/thumbnail/iaapgai/img_20150509_1812 20.jpg The ZV is negative controlled, so first picture. Non Connect is not needed, so Lock signal comes to pin 4 on the yellow plug, Unlock to pin 17. The third from above with the mass sign then comes together with the Black Mass cable to pin 13 of the black plug? And what does the mass sign on the Unlock signal mean? The fourth from above is not labeled at all. What could that be? Have no idea of electrical engineering and would be happy if someone could help me. . I should still get the soldering done Thank you