Chevrolet Nova Brake Light Switch Guide: 1969-1980 Problems and Replacement
Don't get caught with non-working brake lights; this is a simple but critical fix for your Nova.
- A faulty brake light switch is a critical safety failure; replace it immediately.
- The job is simple, inexpensive, and can be done by a DIYer in under 30 minutes.
- Standard Ignition is a reliable aftermarket choice; Skyward is a budget option.
- Verify if your Nova has cruise control before ordering, as the switches are different.
Is Your Nova's Brake Light Switch Failing?
A faulty brake light switch is a major safety hazard. The symptoms are usually straightforward and should be addressed immediately. Because this is a simple mechanical part, failure is often due to age and wear from millions of presses over the decades.
Key Symptoms
🎬 Watch: A quick guide to identifying common switch failure symptoms.- Brake Lights Don't Turn On: This is the most dangerous symptom. The internal contacts of the switch have worn out and no longer complete the circuit when you press the pedal.
- Brake Lights Stay On: The switch can fail in the 'on' position, leaving your brake lights permanently illuminated. This can confuse other drivers and will drain your battery when the car is parked.
- Intermittent Brake Lights: The lights may flicker or only work when the pedal is pressed in a specific way. This indicates the switch is worn and failing.
- Cruise Control Won't Work (if equipped): On Novas with factory cruise control, a bad brake light switch can prevent the system from engaging or cause it to disengage unexpectedly.
Choosing the Right Aftermarket Brake Light Switch
For a classic car like the 1969-1980 Nova, new OEM (Original Equipment Manufacturer) parts from GM are generally not available. The aftermarket is your primary source, offering a range from budget to standard-quality parts.
Brand Tiers for Your Nova
- Standard Replacement (Standard Ignition): Standard Motor Products (SMP), or Standard Ignition, is a long-established aftermarket manufacturer with a reputation for producing reliable, OE-quality parts. Many professional mechanics trust this brand for everyday repairs. Their standard line is considered a durable and safe choice for your Nova.
- Economy (Skyward): Skyward is a budget-friendly brand. While functional, parts from economy lines are typically built to a lower price point and may not offer the same longevity or material quality as a standard replacement brand. For a critical safety part like a brake light switch, an economy part should be considered a temporary fix or a choice for a limited-use vehicle.
Cost of Replacing a Nova Brake Light Switch
This is an inexpensive repair, whether you do it yourself or take it to a shop.
| Item | Estimated Cost |
|---|---|
| New Aftermarket Part | $5.40 - $29.97 |
| Shop Labor | $50 - $90 |
| Estimated Total (At a Shop) | $55 - $120 |
Cost estimates are based on the part price range and national labor averages for a 0.5-hour job. Your final cost will vary by location and specific part chosen.
Frequently Asked Questions
Where is the brake light switch located on a 1969-1980 Nova?
The brake light switch is located under the driver's side dashboard, mounted on a bracket near the top of the brake pedal arm. You will need to look up from the floor mat to see it attached to the pedal support structure.
Can I replace the brake light switch myself?
Yes, this is a very DIY-friendly job. It typically requires basic hand tools to remove and install. The most difficult part is often the uncomfortable position required to work under the dashboard. The entire process usually takes less than 30 minutes.
🎬 See this walkthrough for replacing the switch on a classic Chevy.Can a bad brake light switch drain my car's battery?
Yes. If the switch fails and gets stuck in the 'on' position, it will keep your brake lights illuminated even when the car is off, draining the battery overnight.
Do I need to adjust the new brake light switch?
Yes, proper adjustment is critical. The switch must be installed so that the brake lights turn on with minimal pedal travel (typically 1/4 to 1/2 inch) but are fully off when the pedal is released. An improperly adjusted switch can result in brake lights that are always on or that don't come on soon enough.
🎬 Watch: How to properly adjust your new stoplight switch.Helpful Videos
Technical Specifications
The primary specification is the number of electrical terminals (prongs). Switches for cars without cruise control are typically simpler (e.g., 2 prongs). Switches for cars with cruise control often have more terminals (e.g., 4 prongs) to handle the extra circuit. Common aftermarket part numbers include SLS66, SLS66T, and SLS159T.
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.