Easy question on CR10 v2

I have purchased a CR10 V2, and got it u and running but then get a filament error. I see that the filament runout sensor is not plugged in. However, the wire seems to be missing completely, 3 pin wire on sensor. Where does the other end go? I think it is suppose to route to a board underneath the cover below the filament sensor, but I see a 3 pin connection labeled x+ on the board. I assume this is it. My question is really which of the 3 pins can I "Jumper" across to bypass the sensor and print until I get a cable?