A Studebaker Champion Owner's Guide to the 1939-1948 Brake Light Switch
Understand the unique hydraulic brake light switch in your classic Studebaker Champion.
- The Champion uses a hydraulic pressure switch in the brake line, not a mechanical switch at the pedal.
- A failing switch is a critical safety issue; do not drive the vehicle if the brake lights are not working properly.
- Replacement is feasible for a DIY mechanic but requires bleeding the brakes, a crucial step for safety.
- The quality of modern aftermarket hydraulic switches can be inconsistent, so inspect and test the part if possible.
Understanding Your Champion's Brake Light Switch
The brake light switch on a 1939-1948 Studebaker Champion is a part that often needs attention. It is not located by the brake pedal. Instead, it is a pressure-activated switch plumbed into the hydraulic brake system. When you press the brakes, the pressure of the brake fluid itself is what turns on the lights. This design was common for the era but requires a specific type of switch to function correctly.
Symptoms of a Failing Brake Light Switch
A bad brake light switch can create dangerous situations. The signs of failure are usually straightforward.
- No Brake Lights: The most common and dangerous symptom is when the brake lights do not turn on at all. This means the internal electrical contacts in the switch have failed completely.
- Brake Lights Stuck On: If the switch fails in the 'on' position, your brake lights will not turn off. This can drain your battery and confuse other drivers on the road.
- Lights Only Work Under Hard Braking: A failing switch may require more and more hydraulic pressure to activate. If your lights only come on during a hard stop, the switch is worn out and needs immediate replacement.
Safety First
Driving without functional brake lights is illegal and extremely dangerous. A failed switch increases the risk of a rear-end collision. Do not drive your vehicle if you know the brake lights are not working correctly.
Choosing the Right Aftermarket Part
For a vintage vehicle like the Studebaker Champion, new original equipment (OEM) parts are no longer made. Your options are typically New Old Stock (NOS) or new aftermarket parts.
Standard Ignition is a common brand for aftermarket electrical parts. They produce switches that are compatible with the Champion's system. However, owners of various classic cars have reported that the quality of modern hydraulic pressure switches can be inconsistent across all brands. Some switches may fail prematurely due to the design of their internal contacts. It is a good practice to test the switch before installation if possible and keep your receipt.
When replacing the switch, you must bleed the brakes afterward to remove any air that entered the system. This is a critical step to ensure your brakes work safely.
Cost of a New Brake Light Switch (1939-1948 Studebaker Champion)
| Part Type | Estimated Cost |
|---|---|
| New OEM | N/A (Only available as New Old Stock) |
| New Aftermarket (Standard Ignition) | $38.97 |
| Used OEM (NOS) | $50 - $100+ (Varies by availability) |
| Shop Labor for Installation | $60 - $120 |
Frequently Asked Questions (FAQ)
Where is the brake light switch located on my Champion?
The switch is not inside the car. Look for it screwed into the brake system's master cylinder or a junction block in the brake lines, typically in the engine bay or on the frame rail.
Is replacing the brake light switch a DIY job?
Yes, if you are comfortable working on brake systems. The process involves unscrewing the old switch, screwing in the new one, and then bleeding the brakes to remove air from the lines. If you are not familiar with bleeding brakes, it is best to have a professional mechanic do the job.
Why can't I use a modern switch from the brake pedal?
You can, but it requires custom fabrication. Some owners modify their vehicles to use a mechanical switch at the pedal to improve reliability. This involves creating a custom bracket and wiring, which is a more involved job than simply replacing the original style switch.
What tools are needed for the job?
You will need a set of flare nut wrenches to avoid stripping the brake line fittings, a standard wrench for the switch itself, fresh brake fluid of the correct type for your vehicle, a container to catch old fluid, and a brake bleeding kit or a helper to assist with bleeding the brakes.
Technical Specifications
This is a hydraulic pressure-activated switch. The most common thread size for this application is 1/8-27 NPT. It is designed to activate when brake line pressure reaches approximately 60-120 PSI.
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.