A method for implementing a wiring on a matrix of conductor connection devices, in particular terminal conductor connection devices for connection of conductor ends, in particular to at least one series terminal block or several series terminal blocks (201, 202) that each consists of several series terminals, on or by means of a wiring device: Step 100): a wiring diagram is created with a program for creating a wiring diagram; Step 200): by means of at least one luminous element, individual, preferably two conductor connection devices to be interconnected according to the wiring diagram, in particular terminal conductor connection devices, are illuminated in the matrix directly or indirectly in accordance with the wiring diagram; Step 300): the conductor connection devices that are illuminated by means of the luminous element and that are to be interconnected, in particular terminal conductor connection devices in the matrix, are connected to conductors, the ends of which are inserted in the conductor connection devices to be interconnected, in particular terminal conductor connection devices in the matrix, thereby establishing a respective conducting wiring connection; and Step 400): the conducting wiring connection created in Step 300) is tested with a test device; wherein, when the conducting wiring connection created in Step 300) is classified as being functional, Steps 200) and 300) are then repeated until the wiring diagram is implemented completely and the wiring to be created is complete and wherein, when the respective conducting wiring connection created in Step 300) is not classified as being functional, the wiring connection then is disconnected and re-connected with Step 200) and 300), upon which Step 400) then follows, characterized in that one, several, or all of the conductor connection devices, particularly terminal conductor connection devices, have a reflection means assigned for reflecting incidental light. Step 100): a wiring diagram is created with a program for creating a wiring diagram; Step 200): by means of at least one luminous element, individual, preferably two conductor connection devices to be interconnected according to the wiring diagram, in particular terminal conductor connection devices, are illuminated in the matrix directly or indirectly in accordance with the wiring diagram; Step 300): the conductor connection devices that are illuminated by means of the luminous element and that are to be interconnected, in particular terminal conductor connection devices in the matrix, are connected to conductors, the ends of which are inserted in the conductor connection devices to be interconnected, in particular terminal conductor connection devices in the matrix, thereby establishing a respective conducting wiring connection; and Step 400): the conducting wiring connection created in Step 300) is tested with a test device; wherein, when the conducting wiring connection created in Step 300) is classified as being functional, Steps 200) and 300) are then repeated until the wiring diagram is implemented completely and the wiring to be created is complete and wherein, when the respective conducting wiring connection created in Step 300) is not classified as being functional, the wiring connection then is disconnected and re-connected with Step 200) and 300), upon which Step 400) then follows, characterized in that one, several, or all of the conductor connection devices, particularly terminal conductor connection devices, have a reflection means assigned for reflecting incidental light.