How To Replace Your Turn Signal Relay

By Matthew Wright, About.com

Is Your Turn Signal Relay Bad, and Does It Need Replacing?
"Keep Your Signals Blinking"

Turn Signals Are An Important Safety Feature

Turn signals are one of the easiest systems in your car to troubleshoot, well usually they are. Your signal flashers either work or they don't. It's kind of like being pregnant - there's no such thing as "sort of." Troubleshooting your turn signals isn't tough. If your turn signals have stopped working, it'll be doing one of these things: blinking rapidly, coming on without blinking, or nothing at all. The good news is that all of these symptoms point to two possible issues, a bad turn signal relay or a dead bulb. If the signal blinks really fast, you have a bulb out on that side. If it doesn't come on at all, or doesn't blink, you'll need to replace your turn signal relay. Your turn signal relay is easy to replace, and they are almost never expensive.

If your turn signals aren't doing the job, and you're ready to replace your turn signal relay, read on.

*Some vehicles have separate flasher relays for turn signals and hazard lights. Be sure to check both systems while you're thinking about signal relays. Hazard lights can be very important.

Replacing the Turn Signal Relay
"Your flasher relay is easily accessible."

Carefully remove and replace the turn signal relay.
photo by Matt Wright, 2007

If you've determined that you need to replace your turn signal relay, you're in luck -- it's easy! In fact, it's one of the easiest repair you'll ever do.

1. Locate your relay cluster. You can find this in your car's owner's manual.
2. Locate the turn signal relay. This should also be in your owner's manual. If it's not, you can consult a service manual for your car.
3. Once you can see your relays, remove the old turn signal flasher relay and replace it with the new one. Don't worry about installing it incorrectly, it will only go in one way, the right way.

That's it! You're back to blinking, and back to being a safe car on the road.


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Oh! It's easy. You can repair your own car signals in just minutes. Now you can be safe driving espeacially at night. Drive Safely!

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