Go-Parts
Cart 0
Your cart is empty
Add an item to see it appear here.
Wrenchy
Go-Parts Garage
Expert guides for diagnosing, troubleshooting, and replacing auto parts Expert guides for diagnosing and replacing auto parts
Browse All →
🛍️ Shop This Part

1955-1956 Studebaker E17 Brake Light Switch: A Complete Guide

Keep your classic Studebaker truck safe and legal by ensuring your brake lights function correctly.

3 minutes to read 1955-1956 Studebaker E17
Difficulty
1/5
Est. Time
0.5 hrs
DIY Doable?
✅ Yes
Shop Labor
$50-$100
Used OEM Price
$10-$20 or null
🚫 Do not drive — Driving without functional brake lights is illegal and extremely dangerous.
Key Takeaways
  • The 1955-56 Studebaker E17 uses a hydraulic pressure switch, not a mechanical one.
  • Symptoms of failure are simple: brake lights don't work or they stay on constantly.
  • For this classic truck, a quality aftermarket brand like Standard Ignition is the reliable and standard repair choice.
  • Replacement is an easy DIY task, but you may need to bleed the brakes afterward.
The brake light switch on your 1955-1956 Studebaker E17 is a crucial safety part. Unlike modern vehicles that use a mechanical switch at the brake pedal, your truck uses a hydraulic pressure switch. This switch is activated by the pressure of the brake fluid when you press the pedal. Once the pressure reaches a certain level, the switch closes an electrical circuit, sending power to the brake lights at the rear of your truck. This simple but vital component lets other drivers know you are slowing down or stopping.

Symptoms of a Failing Brake Light Switch

On a straightforward classic truck like the Studebaker E17, the signs of a bad brake light switch are usually clear. Because the system is simple, diagnosis is also easy. Before assuming the switch is bad, always check your brake light bulbs and the fuse first.

  • Brake Lights Do Not Turn On: This is the most common and dangerous symptom. If you have confirmed the bulbs and fuse are good, the hydraulic switch is the most likely problem. An internal failure can prevent it from completing the electrical circuit.
  • Brake Lights Stay On: The switch can also fail in the 'on' position. This will cause the brake lights to remain lit even when you are not braking, which can confuse other drivers and drain your battery when the truck is parked.
  • Flickering or Delayed Brake Lights: An intermittent failure inside the switch can cause the lights to flicker, or only come on after heavy brake pedal pressure. This indicates the switch is worn and unreliable.

Choosing the Right Aftermarket Part

For a vehicle from the mid-1950s, finding a "New Old Stock" (NOS) OEM brake light switch is highly unlikely and often impractical. The standard for keeping these classic trucks on the road is to use high-quality aftermarket parts.

Aftermarket Brand Assessment

Brand Our Assessment
Standard Ignition (Standard Motor Products) Standard Ignition is a well-regarded brand with a long history of producing reliable automotive electrical parts. For classic vehicles like the Studebaker E17, their components are a trusted and widely available option that meets or exceeds original specifications. They are considered a top-tier choice for a replacement brake light switch.

A Note on Part Type

Your Studebaker E17 uses a hydraulic pressure switch, not a mechanical one. This switch screws into the brake system, often on the master cylinder. Ensure you are purchasing the correct type of switch. Universal mechanical switches will require significant modification to work and are not recommended.

Estimated Costs

The brake light switch is an affordable and easy-to-replace part. The main cost variation will be in shop labor if you choose not to do the work yourself.

Item Estimated Cost
New Aftermarket Part $15 - $25
Shop Labor $50 - $100

Frequently Asked Questions (FAQ)

Where is the brake light switch located on my Studebaker E17?

The brake light switch is a hydraulic pressure switch. You will typically find it screwed into the master cylinder under the hood or on a brake line junction block along the frame. It will have two wire terminals connected to it.

Is this a difficult part to replace myself?

No, this is a very easy job for most DIY mechanics. The process involves unscrewing the old switch and quickly screwing in the new one. The main challenge is to minimize brake fluid loss. It's a good idea to have the new switch ready to go the moment you remove the old one. Basic hand tools are all that is required.

Will I need to bleed my brakes after replacing the switch?

Possibly. If you replace the switch quickly, you may only lose a few drops of fluid and not introduce air into the system. However, if a significant amount of fluid is lost or if the brake pedal feels spongy after the replacement, you will need to bleed the brakes to remove any air that has entered the lines.

Are there any recalls or known issues for the brake light switch?

There are no recalls on file with the NHTSA for the 1955-1956 Studebaker E17, as their database generally begins in 1966. Widespread searches of owner forums and technical service bulletins show no common or recurring factory defect related to the brake light switch for this specific model.

Technical Specifications

Hydraulic Pressure Activated, Screw-In, 2-Terminal

Wrenchy
Article researched & written by
Go-Parts' AI research assistant. Every article is backed by live web research, verified OEM data, and real technician knowledge — so you get accurate, up-to-date information you can trust.
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:
In this article
🛍️ Shop This Part
Jump to ▴

Email This Guide

We'll send you a link to this article so you can read it later or share it.

Added to cart · Part