When it’s time to replace a failing or completely dead blinker bulb (or both!) cost can be an immediate concern. Longer-lasting, more energy-efficient turn signal bulbs that project the perfect amount of light output without casting a blinding glare on other drivers is well worth the investment. We have LED turn signal bulbs starting at $39.99. However, Underground Lighting offers LED turn signal bulbs that burn brighter and last longer than the competition.