1. Steering Wheels & Horn Buttons On Sale
  2. sku: 29831047631290773
  3. CLASSIC INDUSTRIES EL520

CLASSIC INDUSTRIES EL520 Horn Contact Brush Volt Relay Chevrolet/gmc

fits make: Chevrolet, Gmc. year: 1947-52.

El520 Classic Industries 1947-52 Chevrolet/gmc Truck Horn Contact Brush 6 Volt Without Relay

( Brand: Classic Industries ), ( Manufacturer Part Number: EL520 ), ( Part Type: Horn Brush )

Review CLASSIC INDUSTRIES Chevrolet/gmc Truck Horn Contact Brush Volt Without Relay fits 1947-52

The **Classic 1947-1952 Chevrolet/GMC EL520 Horn Contact Brush Volt Relay** is a meticulously crafted, high-performance replacement component designed to restore the authentic, robust functionality of the iconic pre-war and early post-war Chevrolet and GMC vehicles. This relay, a critical element in the electrical system of these legendary trucks, serves as the bridge between the driver s horn button and the horn itself, ensuring a crisp, immediate response when activated. Crafted from durable, corrosion-resistant materials, this relay features a **high-quality brass or copper contact brush**, engineered to withstand the demands of frequent use without pitting or wear, a common issue in aging original parts. The internal **volt relay mechanism** is precision-built to handle the robust electrical demands of the EL520 s robust starter and lighting systems, delivering a clean, uninterrupted signal to the horn coil while minimizing arcing or resistance that could lead to premature failure. Whether restoring a vintage workhorse, a show-worthy classic, or a daily-driver with heritage roots, this relay ensures reliable operation, eliminating the frustrating delays or intermittent failures that plague aftermarket knockoffs. Its **universal compatibility** with all 1947-1952 Chevrolet/GMC EL520 models including the iconic Task Force, Advance-Design, and early 3100 series makes it an indispensable upgrade for enthusiasts seeking both authenticity and performance. With its **clean, no-fuss installation** (requiring only basic tools and minimal wiring adjustments) and **long-lasting durability**, this relay is more than just a replacement it s a nod to the engineering excellence of a bygone era, ensuring your classic truck roars to life with the same bold, uncompromising spirit it was built to deliver.

### Pros and Cons of Buying a Classic Chevrolet/GMC Horn Contact Brush Volt Relay (1947 1952)

#### **Pros:**

1. **Authenticity and Restoration Value** Original parts are highly sought after by collectors and restorers of vintage vehicles. Using a genuine relay ensures the car retains its historical accuracy, which can increase its value if restored properly.

2. **Reliability and Durability** Classic automotive components, when in good condition, are often built to last. The mechanical nature of brush-type relays and contactors can be more robust than modern electronic alternatives, especially if the original was well-maintained.

3. **Compatibility** These relays are designed specifically for the 1947 1952 Chevrolet/GMC models, meaning they will fit without modification. Aftermarket replacements may not always match the original design, which could affect functionality or aesthetics.

4. **Mechanical Simplicity** Brush-type relays are straightforward in operation, making them easier to diagnose and repair compared to modern solid-state relays, which can fail silently or require specialized testing.

5. **Aesthetic Appeal** For enthusiasts who prioritize period-correct appearance, an original or high-quality reproduction relay enhances the car s vintage look, especially in show cars or restoration projects.

6. **Ease of Replacement** These relays are relatively simple to install, requiring basic tools and minimal wiring knowledge. Many mechanics and DIYers are familiar with handling them.

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#### **Cons:**

1. **Limited Availability** Finding a genuine or high-quality reproduction relay can be challenging, especially for older models. Prices may be inflated due to scarcity, and sourcing may require searching through specialty suppliers, eBay, or restoration parts dealers.

2. **Potential for Wear and Failure** Original relays from this era may have degraded contacts or worn brushes, leading to intermittent operation, poor electrical connections, or complete failure. Even reproduction parts may not be as durable as modern equivalents.

3. **Maintenance Requirements** Brush-type relays require periodic cleaning and lubrication of the contacts and brushes to prevent corrosion or arcing. Neglecting maintenance can lead to premature failure, whereas modern relays often require no such upkeep.

4. **Compatibility with Modern Systems** If the vehicle has been modified with aftermarket electronics (e.g., modern ignition systems, LED lights, or upgraded wiring), the original relay may not integrate seamlessly. Voltage or current demands could exceed the relay s capacity, leading to reliability issues.

5. **Cost vs. Modern Alternatives** While original or reproduction relays may be pricier upfront, modern solid-state relays or contactors are often more affordable, longer-lasting, and easier to source. For non-restoration projects, upgrading to a modern part may be a more practical choice.

6. **Skill Dependency** Working with vintage electrical components requires a good understanding of older wiring diagrams and electrical principles. Mistakes in wiring or installation can damage the relay or other systems in the vehicle.

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### **Conclusion:**

Buying a classic Chevrolet/GMC horn contact brush volt relay (1947 1952) is ideal if you are restoring a vintage car to factory specifications, prioritize authenticity, and are willing to invest time in maintenance. The part s historical value and mechanical simplicity make it a worthwhile choice for enthusiasts who appreciate the era s craftsmanship. However, for everyday driving or non-restoration projects, the potential drawbacks such as limited availability, maintenance needs, and higher failure risk may outweigh the benefits. Modern alternatives offer greater reliability and convenience without sacrificing performance.

### **Recommendation:**

- **For Restorers or Collectors:** Purchase an original or high-quality reproduction relay to maintain authenticity. Ensure the relay is in good condition or restore it yourself to avoid early failure. Pair it with other period-correct components to maximize historical accuracy.

- **For Non-Restoration Use or Daily Driving:** Consider upgrading to a modern solid-state relay or contactor. These parts are more reliable, easier to find, and often more cost-effective in the long run. If you must use a vintage relay, thoroughly test it for functionality and be prepared for maintenance.

- **For DIYers with Limited Experience:** If you re not confident in working with vintage electrical systems, consult a professional mechanic or restoration specialist to avoid damaging the vehicle. Modern relays are generally safer for those new to classic car repairs.

Ultimately, the decision depends on your priorities whether you value historical integrity over convenience and long-term reliability.

Details:

Has the heavier copper wire inside to allow for extra electric flow. Fits in the small hole steering wheel hub. A must for the 6 volt system. Just like GM made them.

1947-52 Chevrolet/GMC Truck; Horn; Contact Brush; 6 Volt w/o Relay: This horn button contact brush is necessary for the volt system.

part #: el520 price

  • $11.99

specifications steeringwheelsiiz:

  • for makes: Chevrolet, Gmc
  • for years: 1947-52
  • brand: Classic Industries
  • mpn: El520
  • part type: Horn Brush

offer steeringwheelsiiz:

  • availability: In Stock
  • quantity: 6
  • started: April 6, 2026
  • options: Ship-to-home
  • sold: 0

shipping steeringwheelsiiz:

  • service: USPS Ground Advantage, UPS Ground, UPS 2nd Day Air, FedEx Ground / FedEx Home Delivery
  • transit: 3-8 Days
  • type: Calculated
  • cost: $6.07
  • class: Standard, Expedited
  • carrier: USPS, UPS, FedEx

seller steeringwheelsiiz:

  • city: Huntington Beach, California
  • rating: 99.7%
  • # reviews: 54011

general steeringwheelsiiz:

  • Car Truck Parts Accessories > Interior Parts Accessories > Steering Wheels Horn Buttons
  • condition: New

returns steeringwheelsiiz:

  • policy: Returns Accepted
  • paid by: Seller
  • time: 30 Days

payments steeringwheelsiiz:

  • other
  • wallet: Apple-pay
  • credit card: Discover
for makes: chevrolet, gmc, for years: 1947-52, part type: horn brush,
category: auto parts > car truck parts accessories > interior parts accessories > steering wheels horn buttons, sku: 29831047631290773,
Classic Industries EL520 Is Similar To:
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1 offer $11.99 USD
  • New. Offer #1 priced at $11.99 + $6.57 shipping estimate = $18.56* total. Just like GM made them!. This horn button contact brush is necessary for the 6 volt system.+$6.57 shipping

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