I am working on a PCB for which I need external soldered wires. I made the whole PCB with al the traces on the front layer. Then, with 3 vias, I got to the back layer. Here I need to solder 3 wires to the traces (green traces on picture). I used a "Test point" for that. Does this work: Does placing a pad on a trace make it a connection?
And one more question: I am new to PCB designing. In this design I did not made a ground plane. I am planning to do this in the future, but how can I then solder a wire to this ground plane? Also through a pad placed random on the board where it is filled with copper?