Oh, that's a tricky one. First, turn off the power to the lights by flipping the breaker switch to the OFF position. Then, use a ladder to reach the fuse box located near the lights. Once you've found the fuse, carefully remove it and replace it with a new one. Make sure to match the fuse with the right rating, which should be printed on the side of the fuse box. Once you've replaced the fuse, turn the power back on and test the lights to see if they're working properly.