Lumenex Switchback Set (4257)

Regular price $49.99 USD
Regular price $89.99 USD Sale price $49.99 USD
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Solves the issue LED Blinkers have had since day one.

LEDs have always had one big issue when it came to using them in a blinker application, they Hyper-Flash. This is because LEDs do not create enough resistance to show the vehicle that there is a working bulb there. So the vehicle causes the blinker to flash rapidly which can be extremely annoying.


The Lumenex Switchback Bulbs solve this issue with their built in resistor. This means this bulb is 100% Plug and Play. We've designed it this way because we know that no one wants to splice into wires and install a cheap resistor on their new or used vehicle.

Switchback Function

These Switchback Bulbs are meant to be used in an application where the front running light, and the blinker is the same bulb (they function like this on most all trucks) Switchback Bulbs functions as follows. When the running light is on the bulb is illuminated white. When you engage the blinker, the bulb begins to flash yellow. When you disengage the blinker it returns to its pure white color. This makes the front end of you vehicle look a lot cleaner, with a modern all white (when coupled with LED headlights) look without any amber colored lights.

These will still work on vehicles that use the front bulb only as the blinker ONLY

If your front blinker functions ONLY as a blinker and not as the running light and the blinker. This Switchback Kit will still work for you. HOWEVER only the yellow blinker function will work on this style application. But it will still work on that application. This is because the vehicle is not set up to give power to the tabs that illuminate the white running light part.

  • Bulb Size - (4257)
  • Quantity - 2 Bulbs (Pair)
  • Running Light Color - 6000K Cool White
  • Blinker Color - 3000K Yellow
  • Wattage - 24 Watts
  • Length - 2.32in / 59mm
  • Lumens Running Light - 1200 Lumens (white)
  • Lumens Blinker - 800 Lumens (Yellow)

Rest Assured You're Covered

Many of our products come with a limited lifetime warranty! If our limited lifetime warranty is not listed it comes with our minimum 1 year warranty! We don't make you ship back the old bulb.We know your time is valuable. We don't want to ask you to waste it driving to the post office. Have a warranty issue? Contact our daily customer service and we'll get you taken care of!

Customer Reviews

Based on 4 reviews
William Harbaum (Groton, US)
Led brake lights and reverse lights

Hi I install them they and they look great. It make my F-150 2020. Looks good thanks. Here’s some pictures of my truck.

Angela Bagley (Gainesville, US)

Very happy with the LED lights I ordered for my F150. Easy to install and very bright.

Customer (Marysville, US)
Lighting the way

It’s unbelievable As to how much more you can see and be seen. I’m going to consider backup replacements for the future.

Donald Bacon (Las Vegas, US)
Awesome LED's for my 07 Dodge RAM 3500

You guys are the LED lights out there. I can't wait till your Tail lights are available for my truck.

Thanks again

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