The bottom of the PS/2 Connector is even less intuitive than the numbering scheme. I recommend checking this picture, but also verifying that the pins on the bottom of your connector match the numbered pins you think they do before soldering anything. You can check for connectivity with a regular multimeter by setting it to measure resistance and connecting one probe to the pin on the bottom and sticking the other in the hole. If there is any resistance at all, then that pin is connected to that hole.
I’m using the Green wire for the Clock pin, the Red wire for VCC, the White wire for Data, and the Black wire for ground.