That my friend is no easy task and a bit hard to put into words. Both covers need to be off, guide it in from the right side (looking at the screen) wire end first, keep the plug hanging out the other side till the battery is near in place. Get the plug in and put the battery all the way in. The large wires exit the battery opposite the board. Kind of a generic answer but the best I can offer. The balance connector gets put in place first actually, plug the big ones together early on during the process.