I'm not sure whether you mean the USB interface cable for programming the controller or the actual battery cable itself.
![](http://goldenmotor.com/e-Bike-DIY/CruiseControllerProgrammingInterface-PI200.jpg)
Two usb interface cables are available on the
GM Website, one for the internal controller and one for the external ones.
I expect many of the
GM dealers will also stock these cables, but you would need to check with your local dealer to make sure.
GM batteries are usually supplied with a battery lead, which has the correct plug to suit the battery outlet socket.
Alan