Horn Replacement Guide for the 1966-1970 Chevrolet Caprice
A non-working horn is a safety issue; this guide will help you find the right new aftermarket horn for your classic Caprice.
- Always check the fuse, horn relay, and steering column ground before replacing the horn itself; these are common and cheaper failure points.
- Your 1966-1970 Caprice likely uses a dual-horn system; identify if you need a high-note, low-note, or a complete set for proper sound.
- Replacement is straightforward for a DIYer, typically taking less than an hour with basic tools.
- Aftermarket brands like ACDelco and Standard Ignition offer reliable, direct-fit replacements that are more affordable and available than non-existent OEM parts.
Is Your Caprice Horn Silent? Common Failure Symptoms
A horn failure on a classic car like the 1966-1970 Caprice is common due to the age of the electrical components. The most obvious symptom is the horn not making any sound when you press the button. However, there are other signs that point to a problem.
- No Sound at All: This is the most common failure. The issue could be a blown fuse, a bad horn relay, a wiring problem, or a dead horn unit.
- Weak or Muffled Sound: If the horn sounds quiet or raspy, it could be due to a poor electrical ground, corrosion on the connections, or the horn unit itself failing internally. Sometimes, something physically blocking the horn, like a wiring harness, can also muffle the sound.
- Intermittent Operation: If the horn only works sometimes, it often points to a loose wire, a failing relay, or a problem in the steering column's horn switch.
- Horn Stays On: A horn that won't turn off is usually caused by a stuck horn relay or a short in the steering wheel's horn button circuit.
Diagnose Before You Replace
Before buying a new horn, it's wise to perform a few simple tests. The most common points of failure in the system are often the relay and the ground connection, not the horn itself. A quick check of the fuse and listening for a 'click' from the relay when the horn button is pressed can save you time and money. If the relay clicks but the horn is silent, the problem is likely the horn or its wiring.
Choosing the Right Aftermarket Horn
For a 1966-1970 Caprice, finding a brand-new OEM horn from GM is highly unlikely. The good news is that reputable aftermarket brands offer quality replacements that meet or exceed original specifications. Your Caprice likely came from the factory with two horns—a high-note and a low-note—that work together to create a full, loud sound. When replacing, you should check if you need one or both.
Available Brands: ACDelco vs. Standard Ignition
The two primary brands available for your Caprice are ACDelco and Standard Ignition (also known as SMP).
- ACDelco: As a parts brand owned by General Motors, ACDelco is often considered the next best thing to original equipment. While many of their parts are now manufactured globally, they are designed to fit and function like the original GM parts. For a classic GM vehicle, ACDelco is a trusted and reliable choice.
- Standard Ignition (SMP): Standard Motor Products is a well-respected aftermarket manufacturer that has been around for decades. They are known for producing quality electrical components, and many professional mechanics use their parts without hesitation. They often serve as a high-quality alternative to OEM parts.
Pro Tip: When choosing a replacement, pay attention to whether you are buying a 'high note' or 'low note' horn. If you are only replacing one, you'll want to match it to the one that is still working to maintain the correct sound. If both are being replaced, it's best to buy them as a set.
Estimated Replacement Costs
The cost to replace a horn on a classic Caprice is relatively low, especially if you can do the work yourself. The parts are affordable, and the labor is not intensive.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Horn (ACDelco, Standard Ignition) | $77.37 - $86.25 |
| Shop Labor | $60 - $120 |
| Total Estimated Cost | $137.37 - $206.25 |
Frequently Asked Questions (FAQ)
Why did my Caprice's horn stop working?
For a car of this age, the most common causes are a bad ground connection at the steering column's rag joint, a faulty horn relay, a blown fuse, or corrosion in the wiring. The horn unit itself can also fail from exposure to weather over many decades.
Is it difficult to replace the horn on a 1966-1970 Caprice?
No, it is generally an easy job. The horns are typically located behind the front grille and are held in place by one or two bolts. The replacement involves disconnecting the electrical connector, unbolting the old horn, and bolting the new one in its place. It is a task most DIY mechanics can handle in under an hour.
Do I need a high-note or low-note horn?
Most full-size cars from this era, including the Caprice, used a dual-horn setup with one high-note and one low-note horn to produce a louder, more harmonious sound. If you are replacing only one, identify which one has failed. If replacing both, purchase a matched set.
Can I just use a universal aftermarket horn?
Yes, a universal 12-volt horn can be wired to work. However, it may not have the same tone as the original and might require custom mounting brackets to fit properly. For an authentic sound and easier installation, a direct-fit replacement from a brand like ACDelco or Standard is recommended.
Technical Specifications
OEM Part Numbers: 1115889
Voltage: 12V, Terminal Type: 2 Blade, Configuration: High Note / Low Note
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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.