Bitsetter wire colors are confusing?

I recently purchased an HDM, and the Bitsetter wiring barely reaches to the back of the machine. I am new to this machine but I don’t see how to thread the cable to the back and then into the control box with the length of cable that was provided.

I am now in the process of making an extension cable but confused about the choices made in the wiring colors and wanted to verify it with you before powering up the machine with the Warthog board. The control board shows three connections, GND, 5V, and P, and the cable has a red, a white, and a black cable (in that order) but the way the connector is installed, I can only connect it if the red wire would go to ground? Is that correct? I am attaching photos to clarify my description so any help you can provide would be greatly appreciated.