4 Pin Flasher Relay Wiring Diagram

By | August 12, 2023

A flasher relay is a type of relay that is used to flash the headlights or turn signals on a vehicle. It is a simple device that consists of a coil, armature, and contact points. When the coil is energized, it creates a magnetic field that attracts the armature, which closes the contact points and allows electricity to flow to the headlights or turn signals. When the coil is de-energized, the armature springs back and the contact points open, stopping the flow of electricity.

Flasher relays are typically used in vehicles with mechanical switches for the headlights or turn signals. When the switch is turned on, it energizes the coil of the flasher relay, which causes the headlights or turn signals to flash. The rate at which the headlights or turn signals flash is determined by the resistance of the flasher relay.

Flasher relays are also used in some vehicles with electronic switches for the headlights or turn signals. In these vehicles, the electronic switch sends a signal to the flasher relay, which then energizes the coil and causes the headlights or turn signals to flash.

Flasher relays are an important part of the electrical system of a vehicle. They ensure that the headlights and turn signals are flashed at the correct rate and that they are turned off when the switch is turned off.

If a flasher relay fails, it can cause the headlights or turn signals to stop working properly. The headlights may not flash at all, or they may flash too fast or too slow. The turn signals may not blink at all, or they may blink too fast or too slow.

If you suspect that a flasher relay is faulty, you can test it by replacing it with a known-good flasher relay. If the problem is resolved, then the original flasher relay was faulty. If the problem is not resolved, then the fault is likely in another part of the electrical system.

Flasher relays are available at most auto parts stores. They are a relatively inexpensive part, and they are easy to replace. If you are not comfortable working on your own vehicle, you can have a qualified mechanic replace the flasher relay for you.

Here is a diagram of a 4-pin flasher relay:

4-pin flasher relay diagram

The 4 pins on the flasher relay are labeled as follows:

  • Pin 1: Power
  • Pin 2: Ground
  • Pin 3: Signal
  • Pin 4: Return

The power and ground pins are connected to the battery and the chassis, respectively. The signal pin is connected to the headlight or turn signal switch. The return pin is connected to the headlights or turn signals.


Thesamba Com Beetle Late Model Super 1968 Up View Topic Trouble Getting Turn Signals To Work

Thesamba Com Beetle Late Model Super 1968 Up View Topic Trouble Getting Turn Signals To Work


4 Pin Relay Wiring Diagram Vs 5

4 Pin Relay Wiring Diagram Vs 5


8 Pin Led Flasher Unit

8 Pin Led Flasher Unit


Ep27 12v Automotive Hazard Warning Turn Signal Flasher

Ep27 12v Automotive Hazard Warning Turn Signal Flasher


Ep29l Flasher 4 Pin

Ep29l Flasher 4 Pin


Air Horn Relay Electrical Instruments By Lotuselan Net

Air Horn Relay Electrical Instruments By Lotuselan Net


Flashers And Hazards

Flashers And Hazards


Grote 44090 5 Pin Electronic Led Flasher For Many Ford Vehicles Anythingtruck Com Truck Trailer Parts And Accessories Warehouse

Grote 44090 5 Pin Electronic Led Flasher For Many Ford Vehicles Anythingtruck Com Truck Trailer Parts And Accessories Warehouse


73 Gtv 2000 Turn Signal Relay Alfa Romeo Forums

73 Gtv 2000 Turn Signal Relay Alfa Romeo Forums


7 Pin Flasher Unit Sealed 12v My A Lights

7 Pin Flasher Unit Sealed 12v My A Lights


44860 3 Pin Flashers Terminal Pilot 24v

44860 3 Pin Flashers Terminal Pilot 24v


Automotive Flashers Gtsparkplugs

Automotive Flashers Gtsparkplugs


4 Pin Electronic Led Flasher Heavy Duty Lighting

4 Pin Electronic Led Flasher Heavy Duty Lighting


Turn Sugnal Flasher Unit

Turn Sugnal Flasher Unit


Vw 9 G Box Troubleshooting And Replacement

Vw 9 G Box Troubleshooting And Replacement


Simple Relay Flasher Circuit With Ne555 Timer

Simple Relay Flasher Circuit With Ne555 Timer


Relay Ep27 Flashing Led 12v Flasher Motorcycle Car France Xenon

Relay Ep27 Flashing Led 12v Flasher Motorcycle Car France Xenon


Electronic Flasher Unit 24v 6 Pin 3 1

Electronic Flasher Unit 24v 6 Pin 3 1



Leave a Reply

Your email address will not be published. Required fields are marked *