1955-1956 Studebaker E16 Brake Light Switch Replacement Guide
Keep your classic Studebaker's brake lights working reliably with this guide to understanding and replacing your brake light switch.
- The 1955-56 Studebaker E16 uses a hydraulic pressure switch on the master cylinder, not a mechanical switch at the pedal.
- A failed switch is a critical safety issue; do not drive the vehicle if the brake lights are not working.
- Replacement is a straightforward DIY task, but bleeding the brakes afterward is essential for safety.
- A new aftermarket switch from a brand like Standard Ignition is the most practical and reliable replacement option.
Symptoms of a Failing Brake Light Switch
For a classic truck like the Studebaker E16, the brake light switch is a common failure point. Due to its hydraulic design, it's exposed to brake fluid which can cause it to wear out over time. Here are the most common signs that your switch is failing:
- Brake Lights Do Not Turn On: This is the most obvious and dangerous symptom. If the switch fails in the 'open' position, it will never complete the electrical circuit to illuminate the lights.
- Brake Lights Stay On: If the switch gets stuck in the 'closed' position, it will continuously send power to the brake lights, even when you aren't braking. This can drain your battery and confuse other drivers.
- Intermittent Brake Lights: The lights may flicker or only work when you press the brake pedal very hard. This often indicates the switch is failing and can no longer be trusted.
Choosing the Right Aftermarket Part
For a vehicle from the mid-1950s, finding original equipment manufacturer (OEM) parts is nearly impossible. These parts, often called New Old Stock (NOS), are rare and can be very expensive. The most practical and common solution is a new aftermarket replacement part.
Standard Ignition is a well-known brand that produces replacement parts for a wide range of vehicles, including classics like the Studebaker E16. Their switches are designed to meet original specifications for fit and function. The Standard Ignition SLS27T is a common replacement for these trucks, featuring copper alloy conductors and robust housings for durability. While some owners of classic cars have reported issues with aftermarket switches when using modern DOT 5 silicone brake fluid, the Standard Ignition switch is designed for use with the original style DOT 3 brake fluid.
Pro Tip: Consider a Mechanical Switch Conversion
Some Studebaker owners choose to upgrade from the original hydraulic switch to a more modern mechanical switch mounted by the brake pedal. This modification provides more reliable and instant activation of the brake lights and removes a potential hydraulic leak point from the brake system. However, this is a custom job that requires fabricating a bracket and rerouting wires, while a direct replacement hydraulic switch is a much simpler installation.
Estimated Replacement Costs for a 1955-1956 Studebaker E16
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Standard Ignition) | $15 - $25 |
| New Old Stock (OEM) | $35+ (Very Rare) |
| Shop Labor | $75 - $150 |
Frequently Asked Questions (FAQ)
Where is the brake light switch located on my Studebaker E16?
The brake light switch is not located inside the cab by the brake pedal. It is a hydraulic pressure switch screwed directly into the master cylinder, which is found under the hood in the engine bay. It will have two wires connected to it.
Is replacing the brake light switch a difficult DIY job?
For a mechanic with some experience, this is a relatively easy job. It involves disconnecting the wires, unscrewing the old switch, and screwing in the new one. The most critical step is that you must bleed the brakes after replacing the switch to remove any air that entered the hydraulic system. Failure to do so can result in a soft or non-functional brake pedal.
How do I test my current brake light switch?
First, ensure your brake light bulbs and the fuse are good. If they are, you can test the switch. Locate the switch on the master cylinder and unplug the two wires. Carefully use a small jumper wire to connect the two terminals on the wiring harness plug. If the brake lights turn on, the switch is bad. If they do not, the problem is elsewhere in the vehicle's wiring.
Are there any recalls for the brake light switch on a 1955-1956 Studebaker E16?
There are no official NHTSA recalls on record for the brake light switch for the 1955-1956 Studebaker E16. Given the age of the vehicle, any widespread issues were addressed decades ago or are now handled through standard maintenance and repair with aftermarket parts.
Technical Specifications
OEM Part Numbers: 666858
Hydraulic pressure switch, 2-terminal (bullet type)
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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.