Just cut the cable so that only 4 inches or so is coming from the axle, bear in mind this may affect your warranty? don't know Doug's position on this? strip back the cable a little enough to get your connections made. I used 30A Anderson connectors on my rides, they are cheap and reliable and easy to use, you can solder them on, its a good Idea as the wires are thin and crimping them is not reliable enough.
I use a standard cheap plastic push together 5 pin din connector, I don't use locking connectors on hub motors as I have been saved a couple of times as the wheel has turned in the dropouts and disconnected itself before it snapped the wires, so its a good Idea esp. if you have no torque arms to make the connectors so the break apart easily.
I can post some pictures of the connectors, I think there are some pictures of the Puma of mine on here somewhere showing the connections if you have a dig about.