National Lampoon's Christmas Vacation: House Lights
Clark is trying to turn on his festive house lights but is unable to do so after several attempts. His mom walks in the garage to turn the light on, and the house suddenly lights up, causing the rest of the neighborhood to dim. When Clark's mother turns the switch off, the outside lights turn off as well. Ellen finally realizes the problem and turns the light switch in the garage back on to keep the house aglow.