Cabrio-E cover does not open completely

Hello! Even if the topic has already been discussed several times, despite extensive browsing in the contributions, I have not become quite clever. The following happens: Everything works normal (window down, cover folds to about 2/3 together) until the cover is opened. Then the whole thing and the cover light flashes in the fittings. If I sink the cover and close the lid when the ignition is switched off, you can hear the boot lid lock After that, the trunk can no longer be opened with the key. This is only possible if you play around at the cover lock, whereby the trunk lock reacts again audiblely. I now know from your contributions that there can be a problem at the trunk lock, which otherwise works normally, or cable breaks in the area of the trunk lid hinge. It was always spoken of by the cable harness on the right, as if there were only one. Is that the right side? I have a wire harness on both sides. In the hope of catching the culprit I have repeatedly grumbled and pulled extensively on the right to possibly restore a short contact. But it did nothing. Can someone help me, maybe send me a picture or description where I have to search and repair exactly. Or can someone tell me if there is a repair instruction on the internet. The craft is not a problem, but I don’t want to unnecessarily rip everything out just because I don’t know exactly where to look. Thank you,