Subaru DL Horn Replacement Guide: 1975-1989
Everything you need to know about diagnosing and replacing the horn on your 1975-1989 Subaru DL.
- Horn failure on a 1975-1989 Subaru DL is usually due to a bad horn unit, a blown fuse, or a simple wiring issue.
- Troubleshooting is simple: start by checking the fuse, then listen for a relay click, and inspect the horn and its wiring.
- The horns are located behind the front bumper and are relatively easy to access and replace with basic tools.
- Standard Ignition is a well-regarded aftermarket brand for this part, while 'Replacement' is a budget alternative.
Is Your Subaru DL Horn Failing?
A non-functional horn on a 1975-1989 Subaru DL is a common issue, often due to the vehicle's age. The electrical system is relatively simple, which makes troubleshooting straightforward. Most problems come down to a few key areas: the horn itself, the fuse, or the wiring. Unlike modern Subarus that often have complex issues with clock springs in the steering column, problems on these older models are usually more direct.
Safety First
A working horn is a legal requirement in many areas and a critical safety tool. If your horn is not working, it's best to get it fixed as soon as possible. While the vehicle is still drivable, your ability to warn others in an emergency is compromised.
Diagnosing the Problem
Before buying a new part, a few simple checks can save you time and money:
- Check the Fuse: This is the first and easiest step. Locate the fuse box and check the fuse designated for the horn. A forum for 80s Subaru models suggests the horn and turn signals might share a fuse. If the fuse is blown, replacing it might be a quick fix. However, a repeatedly blowing fuse points to a short circuit.
- Listen for a Click: If your DL has a horn relay, you might hear a click from the engine bay when you press the horn button. If you hear a click but no horn sound, the relay is likely working, and the problem is probably the horn unit itself or the wiring to it. However, some service manuals for later models in this generation reportedly show no horn relay.
- The Horn Itself: The horns are typically located behind the front bumper, sometimes accessible after removing the headlights. They are exposed to the elements, and after decades of service, internal corrosion or failure is very common. In some cases, the horns themselves are simply worn out.
- Wiring Issues: A short in the wiring, particularly in the steering column, can cause the horn to fail or even blow the fuse. Bad ground connections are also a frequent cause of electrical problems on older vehicles.
Choosing the Right Aftermarket Horn
For a vehicle like the 1975-1989 Subaru DL, aftermarket horns are the most practical and available option. OEM parts are likely long discontinued. Fortunately, the available aftermarket brands offer good solutions.
Brand Quality: Standard Ignition vs. Replacement
Standard Ignition (Standard Motor Products): This brand is well-regarded in the aftermarket community. Customer reviews for their horns are generally positive, with users rating them highly for quality, ease of installation, and sound. Standard Motor Products (SMP) has a long history and is known for producing parts that often meet or exceed OEM quality. If you're looking for a reliable, long-lasting replacement that you can install with confidence, Standard Ignition is a solid choice.
Replacement Brand: As a budget-friendly option, "Replacement" brand parts get the job done at a lower price point. However, there is very little specific feedback available for their horns. The general consensus on this brand is that quality can be inconsistent. It can be a good value, but it may not have the same durability or perfect fit as a more established brand like Standard Ignition.
Pro Tip: Check for High and Low Tones
Many vehicles, including older Subarus, use a dual-horn setup with a high and a low tone. When replacing, you can often buy them individually or as a set. If only one of your horns has failed, you can replace just that one, but replacing both at the same time will ensure a consistent and strong sound.
| Part Type | Estimated Cost | Notes |
|---|---|---|
| New OEM | Not Available | Original parts are generally no longer produced. |
| New Aftermarket | $36.29 - $77.37 | This is the most common and recommended option. Price varies by brand. |
| Used OEM | $15 - $40 | Possible to find at salvage yards, but condition and lifespan are uncertain. |
| Shop Labor | $50 - $120 | Estimated 0.5-1.0 hour of labor for diagnosis and replacement. |
Frequently Asked Questions (FAQ)
Where is the horn located on my Subaru DL?
The horn or horns are usually found at the front of the vehicle, mounted behind the front bumper and below the headlights. On some models, you may need to remove a headlight to get easy access.
Do I need a special tool to replace my horn?
No, replacement is typically very simple. You will usually only need basic hand tools like a socket or wrench (often a 10mm) to unbolt the old horn and a tool to disconnect the electrical wire.
My horn sounds weak or muffled. Does it need to be replaced?
Yes, most likely. A weak or muffled sound is a common symptom of an aging horn that is beginning to fail. Corrosion and wear inside the horn assembly reduce its ability to vibrate properly. Replacing it will restore the proper sound level.
Why did my horn stop working after I put in a new fuse?
If you replaced a blown fuse and the new one immediately blows, or if you see smoke, you have a short circuit in the horn system. This means a power wire is touching a ground point somewhere. Common places for this are in the steering column wiring or the wiring leading to the horn itself.
Technical Specifications
Voltage: 12V, Terminal Type: Blade
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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.