Universal ceiling fan light fixtures cause electrical interference and dimming when fan motor engages

DIY homeowners installing aftermarket universal ceiling fan lights experience immediate electrical problems where lights flash brightly then dim or flicker once the fan motor turns on. Current universal fan light kits lack proper electrical isolation or compatibility testing with specific fan models, forcing users to troubleshoot complex wiring issues or abandon the installation entirely. This creates frustration because the product is marketed as 'universal' but fails in real-world applications.