1958 Studebaker 3E11D Brake Light Switch: A Comprehensive Guide
Keep your classic Studebaker truck safe and on the road by understanding this simple but critical part.
- A faulty brake light switch is a critical safety failure; do not drive the vehicle until it is repaired.
- For a 1958 Studebaker 3E11D, a new aftermarket switch from a brand like Standard Ignition is the most reliable and practical replacement option.
- The switch is a hydraulic pressure type located on the master cylinder or brake lines, not a mechanical switch at the pedal.
- Replacement is a simple DIY task, but it requires bleeding the brakes afterward to ensure safety.
Is Your Studebaker's Brake Light Switch Failing?
A faulty brake light switch on a classic truck like the 1958 Studebaker 3E11D is a serious safety hazard. Since there are no dashboard warning lights for this system, diagnosis relies on visual checks. The symptoms are usually straightforward, but it's always a good idea to check your bulbs and fuses first before replacing the switch.
Key Failure Symptoms:
- Brake Lights Do Not Turn On: This is the most dangerous symptom. If you've confirmed the bulbs and fuse are good, the switch is the most likely problem. The internal components can wear out and fail to make an electrical connection.
- Brake Lights Stay On: If the switch fails in the 'on' position, it will constantly send power to the brake lights. This not only confuses other drivers but will drain your battery when the truck is parked.
- Intermittent or Flickering Lights: The switch might only work under heavy braking or cause the lights to flicker. This indicates it is worn and unreliable, needing immediate replacement.
Safety First: A Critical Part
Driving without functional brake lights is illegal and extremely dangerous. A faulty brake light switch should be replaced immediately before the vehicle is driven again.
Choosing the Right Aftermarket Switch
For a 1958 vehicle, finding a "new" original equipment (OEM) part from Studebaker is not a realistic option. Your choices are typically New Old Stock (NOS), used original parts, or new aftermarket parts.
- New Old Stock (NOS): These are original, unsold parts. While authentic, they can be very expensive, hard to find, and their internal seals and contacts may have degraded over 60+ years on a shelf.
- Used OEM: A used switch is not recommended. It's a low-cost wear item, and you have no idea how much life is left in a used part.
- New Aftermarket: This is the most practical and recommended choice. For a simple component like a hydraulic brake light switch, modern manufacturing from a reputable brand like Standard Ignition provides a reliable, durable, and affordable part. These switches are designed to meet or exceed original specifications and are readily available.
Pro Tip: Some Studebaker owners in forums discuss converting the original hydraulic switch to a more modern mechanical switch that mounts by the brake pedal. While this is an option for custom builds, a quality aftermarket hydraulic switch is the simplest, most direct replacement for a stock vehicle.
Cost of Replacing a Brake Light Switch on a 1958 Studebaker 3E11D
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Standard Ignition) | $15 - $20 |
| New Old Stock (NOS) | $50 - $150+ (Highly variable, if found) |
| Shop Labor | $50 - $100 |
Frequently Asked Questions
Where is the brake light switch located on my 1958 Studebaker truck?
The brake light switch is a hydraulic pressure switch, not a mechanical one by the pedal. Look for a small, two-terminal switch screwed into the master cylinder or a brake line junction block on the frame.
Is replacing the brake light switch a difficult DIY job?
For a home mechanic, this is a relatively easy job. It involves unplugging the two wires, carefully unscrewing the old switch, and quickly screwing in the new one to minimize brake fluid loss. You will need to bleed the brakes afterward to ensure there is no air in the system, which is a critical safety step. The entire process should take less than an hour.
Do I need special tools to replace the switch?
You will need basic hand tools, such as an open-end wrench to fit the switch. You will also need brake fluid and potentially a brake bleeding kit to properly bleed the brakes after installation.
How do I test the old switch?
A simple way to test if the switch is the problem is to first check your bulbs and fuse. If they are good, locate the switch, unplug the two wires, and carefully connect them together with a jumper wire. If the brake lights turn on, the switch is bad. If they do not, you have a wiring or power issue elsewhere in the circuit.
Technical Specifications
Hydraulic pressure activated switch, typically with a 1/8-NPT thread and two electrical terminals.
We Have This Part in Stock
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.