1958 Studebaker 3E6 Brake Light Switch: A Comprehensive Guide
Everything you need to know about diagnosing and replacing the hydraulic brake light switch on your classic Studebaker truck.
- The 1958 Studebaker 3E6 uses a hydraulic pressure switch, not a mechanical pedal switch.
- The most common failure symptoms are brake lights that won't turn on or won't turn off.
- New aftermarket switches from brands like Standard Ignition are the most practical and reliable replacement option.
- If you use modern DOT 5 silicone brake fluid, be aware it may cause premature failure of some reproduction switches.
Is Your Studebaker's Brake Light Switch Failing?
For a classic truck like the 1958 Studebaker 3E6, the signs of a bad brake light switch are straightforward. You won't get a warning light on your dashboard; the diagnosis is all visual. The switch is a simple part, but its failure can create a serious safety hazard. Before you assume the switch is bad, always check that the brake light bulbs are good and that the fuse is not blown.
Choosing the Right Aftermarket Switch
For a vehicle from the 1950s, finding a new original Studebaker part is not a realistic option. Your choices are generally limited to a new aftermarket part or a rare "New Old Stock" (NOS) part. NOS parts are original, unsold components that can be very expensive and may have degraded over time. A new aftermarket switch is the most practical, affordable, and reliable choice.
Standard Ignition is a well-established brand that manufactures replacement switches for your truck. Their parts are designed to meet original specifications and are a common, trusted choice for repairs on classic vehicles.
A Note on Silicone Brake Fluid
Many classic vehicle owners use modern DOT 5 silicone brake fluid. However, some parts suppliers and Studebaker owners report that reproduction hydraulic brake light switches may fail prematurely when used with silicone fluid. The Standard Ignition switch, for example, often includes a warning against its use with silicone brake fluids. If you use DOT 5 fluid, be aware of this potential issue. Some owners perform custom modifications to install a mechanical switch to avoid this problem entirely.
Cost of Replacing a 1958 Studebaker 3E6 Brake Light Switch
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Switch | $15.52 - $15.52 |
| Shop Labor | $50 - $100 |
| New Old Stock (OEM) | Not typically available |
Cost estimates are for parts and labor only and do not include taxes, shop supplies, or fees. Labor costs are based on an estimated 0.5-1.0 hours of work at a typical independent shop rate.
How to Test Your Switch
You can quickly test your brake light switch. First, ensure the bulbs and fuse are good. Then, locate the switch on the master cylinder or brake line junction. Unplug the two wires connected to it. Carefully use a small jumper wire to connect the two terminals on the wire harness together. If the brake lights turn on, the switch is faulty and needs to be replaced. If they do not light up, the problem is elsewhere in the vehicle's wiring.
Frequently Asked Questions
Where is the brake light switch located on my Studebaker 3E6?
The brake light switch is a hydraulic pressure switch located under the hood, not inside the cab. Look for a small, threaded sensor with two wires coming out of it, typically screwed directly into the brake master cylinder or a nearby brake line junction block on the frame.
Is this a difficult part to replace myself?
No, this is considered an easy DIY job for most owners. The process involves unplugging the wires and unscrewing the old switch. To minimize brake fluid loss, have the new switch ready to screw in immediately. If too much air gets into the system, you may need to bleed the brakes afterward.
Are aftermarket switches as good as the original for a classic truck?
Yes. For a simple component like a brake light switch, modern manufacturing from a reputable brand like Standard Ignition often results in a part that is as reliable, or even more so, than an original that is over 60 years old. New aftermarket is the standard, practical choice.
Have there been any recalls for the 1958 Studebaker 3E6 brake light switch?
Searches of the National Highway Traffic Safety Administration (NHTSA) database and other sources did not find any recalls or technical service bulletins (TSBs) specifically for the brake light switch on the 1958 Studebaker 3E6.
Technical Specifications
Hydraulic pressure activated, 2-terminal, screw-in type.
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.