You could check the connections of the breadboard, using a multimeter (set to continuity check) and wires in the breadboard holes, with the + and - leads, from the meter, at either end of each row/column of connections, following the diagram below:

[![Breadboard connections][1]][1]

It might be a bit tedious, but it should only take thirty minutes maximum, and would give you peace of mind as well as saving you four Euros...

Answering the last part of your question - Taking the graphics from [my answer][2] to http://arduino.stackexchange.com/questions/20931/code-to-control-servo-with-shield, to show the different colours for the four different connector types:

Futaba and Airtronics connectors

[![Futaba and Airtronics connectors][3]][3]

Hitec and JR Radio connectors have the same pin out:

[![JR Radio and HiTec connectors][4]][4].

This means that the red, brown and orange leads go to a *JR Radios connector*.


  [1]: https://i.sstatic.net/mgQVL.png
  [2]: http://arduino.stackexchange.com/questions/20931/code-to-control-servo-with-shield/20942#20942
  [3]: https://i.sstatic.net/Sy2RH.gif
  [4]: https://i.sstatic.net/Kjs4s.gif