Do LED flashers need to be grounded?

Old style thermal flashers don’t need a ground, but LED compatible ones generally do. How do I find the correct LED flasher for my vehicle?

What is a LED flasher relay?

The LED flasher unit is a solid state electronic device that is specifically designed for use on vehicles fitted with LED lights. Additionally, the flasher relay has the unique ability to control the flash rate of the vehicles LED directional indicators.

Are all flasher relays the same?

They come in a variety of shapes, sizes, and designs, which will vary according to the specific needs of the vehicle. When current is applied to the relay the circuit inside cuts on and off, which results in the clicking sound of the relay, as well as the flashing of the turn signal or hazard lights.

Do you need two flasher relays?

You also only need one LED Flasher Relay per bike, so unlike Resistors that could require up to 4 resistors if you were changing the front and rear turns signals to LED, the LED Flasher Relay method only requires one, and works with a total LED signal swap or a mix of LED and incandescent bulbs.

How do you test LED flashers?

How to Test a Flasher Relay

  1. Access the junction box where your flasher relay is located.
  2. Turn your car or truck’s ignition on.
  3. Connect the clip of the test probe to any good ground.
  4. Remove the relay and locate its control and power terminals.
  5. Turn your multimeter on and set it to the ohms setting.

Do LED lights need a resistor?

An LED (Light Emitting Diode) emits light when an electric current passes through it. The ballast resistor is used to limit the current through the LED and to prevent excess current that can burn out the LED. If the voltage source is equal to the voltage drop of the LED, no resistor is required.

Do LED turn signals need a relay?