1987-1994 Jeep Wrangler YJ Hazard Warning Flasher Replacement Guide
Get your emergency flashers working again with this guide to diagnosing and replacing the hazard flasher in your YJ.
- The hazard flasher is a very common, low-cost, and extremely easy part to replace on a YJ Wrangler.
- The YJ uses two separate flashers for hazards and turn signals, located on the fuse block under the dash.
- You can swap the turn signal and hazard flashers to diagnose the problem; if the issue moves, the flasher is bad.
- Aftermarket brands like Crown and Omix-Ada are reliable and affordable choices for this specific part.
Symptoms of a Failing Hazard Flasher
On an older vehicle like the YJ, the hazard flasher is a common failure point. The signs are usually straightforward. If you're experiencing any of these issues, your flasher relay is the most likely cause:
- Hazard Lights Don't Work: When you press the hazard switch, nothing happens at all.
- Lights Stay On (Don't Flash): The hazard lights illuminate but stay solid instead of blinking.
- No Clicking Sound: You don't hear the typical rhythmic clicking sound from under the dash when the hazards are on.
Pro Tip: Your YJ uses two separate flashers for the turn signals and the hazards. A great way to test if the hazard flasher is bad is to swap it with the turn signal flasher. They are located next to each other on the fuse block. If your hazards start working but your turn signals stop, you've confirmed the flasher is the problem.
Choosing the Right Aftermarket Flasher
For a simple relay like this, there's little difference between OEM and a quality aftermarket part. The key is getting a reliable replacement that fits correctly. Aftermarket brands offer a cost-effective solution that meets original specifications.
Brand Comparison: Crown Automotive vs. Omix-Ada
Both Crown Automotive and Omix-Ada are well-known brands in the Jeep aftermarket community. For a basic part like a flasher relay, both brands are considered standard replacement quality and offer a reliable fix. Some mechanics and Jeep owners have a slight preference for Crown, citing good fitment, while others have used Omix parts without issue for years. Often, these companies may even source parts from the same manufacturer. Given the identical price point and simple function of this part, either brand is a perfectly acceptable choice to get your hazards flashing again.
🎬 Watch: How to fix flash issues when upgrading to LEDsCheck Other Causes First
While the flasher is the most common culprit, remember that the YJ is known for electrical quirks. Before replacing parts, always check the fuse for the hazard circuit and inspect the bulbs. In some cases, a faulty multi-function switch in the steering column or a bad ground wire can cause similar symptoms. However, 🎬 Watch: Troubleshooting a Jeep YJ blinker that won't flash since the flasher is the cheapest and easiest part to replace, it's always the best place to start.
Cost of Replacing a Hazard Flasher on a 1987-1994 Jeep Wrangler
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Crown, Omix-Ada) | $4.73 |
| Shop Labor | $50 - $100 (Shop minimum) |
Frequently Asked Questions (FAQ)
Where is the hazard flasher located on a 1987-1994 Wrangler?
The hazard flasher is a small, round canister plugged into the fuse block, which is located under the dashboard on the driver's side, to the left of the steering column. The hazard flasher is usually in the socket on the left, while the turn signal flasher is on the right.
Is the turn signal flasher the same as the hazard flasher?
On the YJ, they are two separate parts, but they are often identical and interchangeable. This allows you to swap them for testing purposes. The hazard flasher is designed to work even when the ignition is off, while the turn signal flasher only works when the key is in the 'on' position.
Can I replace the hazard flasher myself?
Yes, this is one of the easiest repairs you can do. It requires no tools. You simply locate the old flasher on the fuse block, pull it straight out, and plug the new one in. The entire process takes less than five minutes.
My new flasher didn't fix the problem. What now?
If a new flasher doesn't solve the issue, check the fuse next. If the fuse is good, the problem might be more complex, such as a bad ground connection (a common issue on YJs), a wiring problem, or a failure in the multi-function (turn signal) switch in the steering column.
🎬 See this walkthrough on diagnosing and replacing the blinker switchAre there any recalls for the hazard flasher on the YJ Wrangler?
No, there are no active recalls or widespread Technical Service Bulletins (TSBs) from Jeep or the NHTSA specifically for the hazard warning flasher on the 1987-1994 Jeep Wrangler.
Helpful Videos
Technical Specifications
OEM Part Numbers: J5452266 56000903
2-Prong Flasher Relay
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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