How To Wire A Three Pin Flasher Relay

1 min read

Split Bus View topic Flasher Relays Substituting 3

When you’re working on a vehicle’s wiring, you’ll often be tasked with installing a three pin flasher relay. This is a common component that’s used in the electrical system of many cars and trucks. It’s responsible for controlling the turn signals and hazard lights. Installing a three pin flasher relay is easy enough for anyone to do, as long as you know the basics of wiring. Read on for a complete guide to wiring a three pin flasher relay.

Step 1: Gather the Required Materials

Before you can start wiring a three pin flasher relay, you’ll need to gather all the necessary materials. You should have a three pin flasher relay, some wire, and a wire stripper. Make sure everything is in working order before you start.

Step 2: Preparing the Wires

Once you have all the necessary materials, you can begin prepping the wires. Start by stripping the ends of the wires with the wire stripper. Make sure not to cut too much of the insulation off. You’ll need to have enough exposed wire to make a solid connection.

Step 3: Wiring the Three Pin Flasher Relay

Once the wires are prepared, it’s time to start wiring the three pin flasher relay. Start by connecting the wires to the terminals on the relay. Make sure to connect the wires in the correct order. Use a multimeter to check for continuity between the wires and the relay’s terminals.

Step 4: Testing the Wiring

Once the wiring is complete, it’s time to test the connections. Connect the relay to the vehicle’s battery and then activate the turn signal. The turn signal should be working properly. If not, check all the connections and make sure they’re secure.


Wiring a three pin flasher relay is a relatively easy task that anyone can do. All you need is the right materials and a bit of knowledge. With the help of this guide, you should be able to wire a three pin flasher relay in no time. Just remember to check all the connections before you begin testing the wiring.