Match the Wires and Attach the Cover
Match the wires from the electrical box to the wires from the ceiling fan, following the manufacturer's instructions and twisting them. Fasten the ends together with wire nuts (Image 1).
Working smarter: Bring extra wire nuts when you go up on the ladder, so you won't have to come back down to get more if you drop one.
Stuff the wires back into the electrical box, and attach the cover (Image 2). Slip the cover's keyhole slots over the screws to keep the cover in place. Then finish attaching the screws, and slip the trim ring over the screws to cover them up.