LED weerstand knipperlicht

Meaning: LED flashing light resistor

what is a resistor?

What is resistance? Resistance is the degree of resistance encountered by a current in a circuit. Resistance is represented in ohms by the Greek letter omega (Ω). Ohm is named after Georg Simon Ohm, a German physicist who studied the relationships between electric current, electric voltage and resistances. He is credited with the formulation of Ohm's law. There are also materials that are good transmitters of electricity and materials that are bad transmitters of electricity. These materials offer a degree of resistance to current.

LED Resistor Flasher

They can be divided into two main categories, namely:

  • Conductors: These are materials that have little resistance and allow electrons to move easily.

For example: gold, silver, copper, aluminium

  • Isolators: These are materials that have high resistance and limit the flow of electrons.

For example: paper, rubber, glass, wood, plastic.

How does a LED flashing light work?

A LED light that flickers is a light that is not on all the time, but the light moves from left to right or vice versa, usually the light is switched on and off alternately by an alternating electrical signal (the button that you press). The signal is often generated electronically, but in old installations this is still done electromechanically. A LED flasher is more conspicuous than a light that is constantly on and is often used to attract attention, for example to indicate a direction in traffic or to alert someone to a possible danger. Below you can read more about resistor(s) for LED indicators.

Which resistor(s) for LED indicators on a vehicle?

If your vehicle has factory bulbs and not LEDs, you will probably need to use a resistor for the flasher. To fix the rapid flashing, listen to your dashboard notification. Most old car/truck models have bulb indicators. This problem is solved with the resistors from TRALERT® feel free to check out the alternatives in our range. The flavours that are now available: 12v (for cars) and 24v (for trucks). Do you still have specific questions? Feel free to ask the TRALERT® team, we are always ready to help.

Featured product


LR24- Resistor 24v LED (truck) lighting

specially developed for use on vehicles with electronic components that are not suitable for LED.


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