Download Only - Ecto 1 LED Install 21108 (Instructions only)

When I got a light set for my Lego ecto-1 (minifig size) and carefully fallowed the instructions (retried a few times too) I found that there was not enough wire, that the bricks would fall apart when wedged between wires, and the biggest complaint is that the light pack is usb powered, no battery pack, just usb, what’s the point of a 4in usb cable?! Do I just need to have it right beside the wall on the ground!