2020–2023 Ford F-150 LED Front Turn Signal Bulbs – 4257 Amber, Built-in Resistor, No Hyperflash, 1200LM (PAIR)

Frequently Asked Questions on LED Turn signals

Do turn signal bulbs have to be Amber? 

Yes, your turn signal bulb needs to alert other drivers on the road with a flashing red/amber light from the rear for maximum safety and consistency purposes. Front-end bulbs must project a white or amber flashing light, as well, to comply with federal regulations. Whichever model you choose, you can rest assured that your amber bulb from Underground Lighting will shine brightly even in the most inclement or low-visibility weather conditions. Call, chat, or email us today and let us help you find the right pick for your car or truck.

What is hyper flash and what causes hyper flash?

Hyper flash is where the turn signals or indicators on a vehicle blink at a much faster rate than normal. This can be caused by several factors:

    
• Bulb Failure: The most common cause of hyper flash is a burnt-out or malfunctioning bulb in one of the turn signals or hazard lights. When one of these bulbs fails, the system detects a lower load on the circuit and increases the flash rate as a warning to the driver.
     
• Installing an LED Bulb: When replacing traditional incandescent bulbs with LED bulbs in vehicles that were not designed for LEDs, you might experience hyper flash. LED bulbs use less power, and the vehicle's flasher relay may interpret this as a burnt-out bulb.
     
• Faulty Flasher Relay: The flasher relay is responsible for controlling the rate of blinking of the turn signals. If it malfunctions, it can cause hyper flashing or erratic blinking. Replacing a faulty flasher relay can resolve this issue.
     
• Wiring Issues: Damaged or corroded wiring can disrupt the electrical flow in the turn signal circuit, affecting the flash rate.
     
• Incorrect Bulb Type: If the wrong type of bulb is installed, it can draw too much or too little power, leading to hyper flash.
     
• Resistance Issues: Some vehicles use a variable load sensing flasher relay, which can detect changes in resistance. When adding additional lights or modifying the wiring, you might change the resistance in the circuit, causing hyper flash.

LED bulbs draw a lot less power and current making the Body Control Module think the bulb is out.

Make sure you start the vehicle and let the engine run before testing your turn signal for hyper flash.

The short answer is no, you don’t. However, you need to have resistors on every turn signal bulb that doesn’t have resisters built in. The front and rear turn signals are tied together so you can not have resistors in the front and not the rear for example if both front and rear are LEDs.

Why Are LED Lights Better?

An LED light bulb saves more energy, produces less heat, and has more light. In addition, it uses 85% less electricity than standard lighting. It is also a lower-cost product but has bright light with a longer life span.

LED light is different from incandescent light. Blue LED combined with yellow phosphor creates white light. The high efficiency of LED light makes it a popular choice.

What Is the Purpose of LED Lights?

LED lights are used as a light source in our homes, devices, and vehicles. LED (light-emitting diode) lights use gallium compounds such as gallium arsenide and aluminum gallium. LED emits light by combining a P-type semiconductor with an N-type semiconductor. Once a voltage is applied, they release energy into light.

What Is the Lifespan of LEDs?

LEDs have a long life span. When an LED is operating at 70% capacity, it has reached the end of its life span.

Incandescent bulbs have around 750 to 2,000 hours of light. In comparison, LED bulbs can have 50,000 to 100,000 hours of light, making them better investments.

Can I Replace Incandescent Bulbs with LED in My Car?

Yes! You can change your initial bulbs to LED in your vehicle. In addition, there are different places where you might want to swap out for LED lights. For example, you can change your headlights, rear license plate lights, interior door entry lights, rear brake lights, and more.

First, however, you need to inspect what type of bulb you need. There are different bulbs with various designs, so you must buy the right one to fit.

Second, different areas of your car may require special tools or specific parts to work properly. Once you have found the products you need, you’re ready to go LED.