Turn signal problems

[Fazerider]

The connectors are new and tested also without them.
Tested also the lamp and its working if I switch it to the other side..  maybe te problem is longer back on the cable.

Yes, you’ll need to check all the connections right back to the point common to the rear indicator and from the other bulb-holder terminal to chassis.
Problems are most likely at the connectors, but it’s possible a wire has broken inside the loom. It’s likely there will be external damage visible if that is the case.