1963-1964 Studebaker 8E6 Brake Light Switch: A Complete Guide
Keep your classic Studebaker truck safe and its brake lights working reliably with the right information.
- The 1963-64 Studebaker 8E6 uses a hydraulic pressure switch, not a mechanical one at the pedal.
- Failure is dangerous; symptoms include lights not working, staying on, or flickering.
- New aftermarket switches from brands like Standard Ignition are the most reliable and available option.
- Be aware that using silicone (DOT 5) brake fluid may cause premature failure of this type of switch.
Symptoms of a Failing Brake Light Switch
A bad brake light switch on a vintage truck like the Studebaker 8E6 has very clear symptoms. Before you replace the switch, always check the simple things first: make sure the brake light bulbs are good and check the fuse. If those are fine, the switch is the next likely problem.
- Brake Lights Don't Turn On: This is the most dangerous symptom. If the bulbs and fuse are good, the switch has likely failed internally and isn't completing the electrical circuit.
- Brake Lights Stay On: The switch can get stuck in the 'on' position. This will drain your battery when the truck is parked and confuse other drivers.
- Flickering Brake Lights: Worn internal parts can cause an inconsistent connection, making the lights flicker when you press the pedal or hit a bump. This means the switch will probably fail completely soon.
A Note on Brake Fluid
The original-style hydraulic pressure switches were designed for standard DOT 3 brake fluid. Some Studebaker owners have reported that using modern silicone brake fluid (DOT 5) can cause these types of switches to fail prematurely. If you are using silicone fluid, be aware that you may experience more frequent switch failures. Some owners modify their vehicles to use a mechanical switch at the brake pedal to avoid this issue, but that requires custom work.
Choosing the Right Aftermarket Switch
For a 1963-1964 vehicle, finding a new original equipment (OEM) part from Studebaker is not a realistic option. Your choices are limited to New Old Stock (NOS) parts or new aftermarket parts.
- New Old Stock (NOS): These are original parts that have been sitting on a shelf for decades. They are rare, can be expensive, and rubber or plastic components may have degraded over time.
- Used OEM: A used part from a parts truck is an option, but its remaining lifespan is unknown.
- New Aftermarket: This is the most practical and common choice. Brands like Standard Ignition produce new replacement switches that are readily available and affordable. Reviews for Standard Ignition parts are generally positive, and they are a long-standing company in the aftermarket industry. For a simple part like a brake light switch, a new aftermarket unit offers modern manufacturing reliability.
| Part Type | Price Range |
|---|---|
| New Aftermarket (Standard Ignition) | $15 - $20 |
| New Old Stock (NOS) OEM | $30 - $70+ (if found) |
| Used OEM | $10 - $25 (availability varies) |
| Shop Labor | $50 - $100 |
How to Test Your Brake Light Switch
You can easily test the switch before buying a new one. First, locate the switch on the master cylinder. Unplug the two wires connected to it. Then, use a small piece of wire to connect the two terminals of the wiring harness together. If the brake lights turn on, the switch is bad. If they do not turn on, the problem is in the wiring, fuse, or bulbs.
Frequently Asked Questions (FAQ)
Is it hard to replace the brake light switch on my Studebaker truck?
No, this is a very easy job for a DIY mechanic. It involves unplugging two wires and unscrewing the old switch from the master cylinder. You will need to bleed the brakes at that corner after installation to remove any air that entered the system. The entire job should take less than an hour.
Where is the brake light switch located on a 1963-1964 Studebaker 8E6?
The brake light switch is a hydraulic pressure switch located outside the cabin. You will find it screwed directly into the master cylinder or in a brake line junction block on the vehicle's frame. It will have two electrical wires attached to it.
Are there any recalls for the brake light switch on my Studebaker?
No, there are no active recalls on the NHTSA database for brake light switches on 1963-1964 Studebaker trucks. Recalls for this issue are generally for much newer vehicles.
What tools do I need to replace the brake light switch?
You will typically need a basic wrench to fit the switch, a rag to catch any spilled brake fluid, and a bottle of fresh DOT 3 brake fluid. You may also need tools to bleed the brakes, such as a small hose and a jar.
Technical Specifications
OEM Part Numbers: 666858
Hydraulic Pressure Activated, 2-Terminal, Screw-In
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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.