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1958 Edsel Roundup Brake Light Switch: A Complete Guide

Keep your classic Edsel's brake lights working correctly by understanding this simple but crucial part.

3 minutes to read 1958-1958 Edsel Roundup
Difficulty
1/5
Est. Time
0.5 hrs
DIY Doable?
✅ Yes
Shop Labor
$50-$100
🚫 Do not drive — Driving without functioning brake lights is extremely dangerous and illegal.
Key Takeaways
  • A faulty brake light switch will either cause your brake lights to not work at all or stay on constantly.
  • For a 1958 Edsel Roundup, a new aftermarket switch from a brand like Standard Ignition is the standard repair option.
  • This is a low-cost part and a simple repair that most owners can perform themselves in under 30 minutes.
  • Always check your bulbs and fuses before replacing the switch to avoid unnecessary repairs.
The brake light switch on your 1958 Edsel Roundup is a straightforward mechanical device. It is located near the top of your brake pedal arm. When you press the brake pedal, it activates this switch. The switch then completes an electrical circuit, sending power to your rear brake lights and causing them to illuminate. This simple action is vital for alerting other drivers that you are slowing down or stopping. On a classic car like the Roundup, this switch's only job is to turn the brake lights on and off.

Symptoms of a Failing Brake Light Switch

Diagnosing a bad brake light switch on a 1958 Edsel is usually simple. The most common signs point directly to the lights themselves.

SymptomDescription
Brake Lights Don't Work This is the most obvious and dangerous symptom. If you've already checked the bulbs and fuses, the switch is the next logical part to inspect. 🎬 Watch this guide on how to diagnose non-working brake lights. A failure inside the switch can prevent it from completing the electrical circuit.
Brake Lights Stay On A switch that is stuck in the 'on' position will keep your brake lights illuminated even when you're not braking. This can drain your battery and confuse other drivers. It often points to a mechanical failure within the switch or improper adjustment.

Choosing the Right Aftermarket Brake Light Switch

For a 1958 Edsel Roundup, finding a new original equipment (OEM) part from Ford is nearly impossible. The most practical and common solution is a new aftermarket replacement. These parts are readily available and designed to be direct replacements.

Aftermarket vs. OEM

Because the Edsel was based heavily on Ford and Mercury platforms, many of its mechanical and electrical parts were shared. The brake light switch, for instance, was used across a wide variety of Ford, Lincoln, and Mercury vehicles from the 1940s through the 1960s. This means aftermarket manufacturers have had decades to produce reliable replacements.

Pro Tip: An aftermarket switch from a reputable brand like Standard Ignition is a reliable choice. These switches are manufactured to meet or exceed the original specifications and are widely used by classic car restorers.

Brand Spotlight: Standard Ignition

Standard Ignition is the primary brand available for a new 1958 Edsel Roundup brake light switch. They are a well-established company known for producing quality ignition and electrical components for a huge range of vehicles, including classics. Their switches use modern materials and are tested to ensure reliability, often providing a longer service life than the original 1950s part.

Cost of Replacing a Brake Light Switch

Replacing the brake light switch is one of the more affordable repairs you can perform on your Edsel.

Part TypeEstimated Cost
New Aftermarket (Standard Ignition)$15 - $20
Shop Labor$50 - $100

Note: Labor costs can vary significantly based on the shop's hourly rate. However, this is a very quick job for any experienced mechanic, often taking less than 30 minutes.

Frequently Asked Questions

Is this a part I can replace myself?

Yes, this is a very DIY-friendly repair. The switch is typically screwed into a bracket near the brake pedal arm. It involves disconnecting the two wires, unscrewing the old switch, screwing the new one in, and reconnecting the wires. Basic hand tools are usually all that's required.

🎬 See how easy it is to fix your brake lights.
Are there any recalls for the 1958 Edsel Roundup brake light switch?

No. Searches of the National Highway Traffic Safety Administration (NHTSA) database show no recalls for this part on a 1958 Edsel. Recalls for vehicles of this era are extremely rare.

Do I need to adjust the new switch?

Yes, some adjustment may be necessary. After installing the new switch, you need to make sure it activates the brake lights at the very beginning of the pedal's travel, and deactivates when the pedal is released. This is usually done by adjusting the switch's position on its mounting bracket until it works correctly.

What is the most common mistake when ordering this part?

There are very few mistakes to be made when ordering, as only one primary aftermarket switch is available that fits the 1958 Edsel Roundup. The most important thing is to confirm your symptoms are not caused by bad bulbs or a blown fuse before ordering a new switch.

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Technical Specifications

This is a 2-terminal, screw-in type switch. The thread pitch is typically 1/8-27.

Wrenchy
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Meet Wrenchy → Updated Jul 21, 2026

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.

Year Coverage
This article covers the Brake Light Switch for:
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