Hi everyone, so im new to e cig modding and im in the middle of building my first passthrough box mod and im having a lil trouble and was hoping some one could help me out. so my question is having to do with the wiring, i have the red (pos) and the black (neg) going through my mod. but the usb cord wiring has red and white come out of it, can i solder the white wire to the black (neg) wire or will that not work and ill have to find a different usb cord?? any help would be useful, thank you!