Switchback LED Turn Signal Bulbs

LED turn signal bulbs usually cost between $39.99 and $69.99 per pair, depending on bulb size, vehicle fitment, color, and built-in features. Basic LED taillight or indicator bulbs may cost less, while CANbus-ready, no-hyperflash, or built-in-resistor LED turn signal bulbs are usually priced higher.

Price may vary depending on the socket type, front or rear position, single-function vs. dual-function design, and whether the bulb is designed for a specific truck application, such as Ford F-Series, Chevrolet Silverado, or GMC Sierra. Amber, red, white, and switchback LED bulbs may also vary in price depending on their output and functionality.

Most Underground Lighting switchback LED turn signal bulbs may cost between $64.99 and $69.99 per pair, depending on bulb size, resistor design, vehicle fitment, and whether the kit is universal or vehicle-specific. Built-in resistor bulbs may be priced higher than basic LED turn signal bulbs because they are designed to help reduce hyperflash without adding separate external load resistors.

Yes, Switchback LED lights are legal in most states when properly installed as turn signals. They comply with Department of Transportation (DOT) regulations by maintaining the required amber color for turn signals while operating. However, specific requirements may vary by location, so we recommend checking your local regulations.

To install a switchback LED turn signal bulb, turn off the vehicle lights, remove the factory turn signal bulb, plug in the new dual-color switchback LED bulb, and test both the white parking light/DRL function and amber turn signal function before reinstalling the housing.

Here is the basic installation process:

1. Turn off the vehicle and make sure the lights are cool.
2. Locate the front turn signal bulb housing.
3. Remove the factory halogen bulb from the socket.
4. Plug the new Underground Lighting switchback LED bulb into the connector.
5. Test the bulb before closing the housing.
6. Confirm that the bulb shows white light for parking/DRL use and amber light when the turn signal or hazard lights are activated.
7. Reinstall the bulb housing securely.

Switchback LEDs are designed for year-round performance. Their weatherproof construction keeps out moisture, dust, and debris while operating reliably in extreme heat and cold. The powerful LED output remains highly visible in rain, snow, and fog, delivering crisp white illumination and clear amber signaling without dimming or delayed color changes.

In North America, amber is the standard color for turn signals and is recognized more quickly by other drivers, helping improve reaction time by up to 0.3 seconds. With Underground Lighting switchback LED bulbs, you don't need to choose between white and amber. They automatically display white light for parking or DRL functions and switch to amber when the turn signal is activated. 

3157, 7443, and 1157 bulbs use different bases and fit different sockets. They may perform similar white-to-amber switchback functions, but they are not interchangeable. Always match the bulb number to your vehicle’s original bulb or use a vehicle fitment tool to select the correct bulb type for the specific make and model before buying.