Your Complete Guide to the 1968-1977 Mercury Montego Brake Light Switch
Don't get caught with your brake lights out; here's what you need to know about replacing this critical part on your classic Montego.
- A faulty brake light switch is a critical safety issue that must be addressed immediately.
- Symptoms are simple: lights don't work, lights stay on, or lights are intermittent.
- Replacement is an easy, low-cost DIY job that requires basic tools and about 30 minutes.
- Quality aftermarket brands like Standard Ignition are a reliable choice for this part.
Is Your Montego's Brake Light Switch Failing?
A bad brake light switch is more than an inconvenience—it's a serious safety hazard. Because the 1968-1977 Montego uses a simple mechanical switch, the symptoms are usually straightforward. If you notice any of these signs, it's time to inspect the switch.
Key Failure Symptoms:
- Brake Lights Don't Work: The most obvious and dangerous symptom. If your bulbs and fuses are good, the switch is the next most likely culprit.
- Brake Lights Stay On: If the switch fails in the 'on' position or the internal plunger gets stuck, it can keep the lights on constantly, draining your battery.
- Intermittent Brake Lights: Lights that flicker or only work sometimes can point to a worn-out switch with a poor internal connection.
Safety First: A Legal and Safety Requirement
Driving without functional brake lights is illegal and dramatically increases your risk of being rear-ended. This is not a repair that should be put off. If your brake lights are not working, the vehicle is not safe to drive.
Choosing the Right Aftermarket Brake Light Switch
For a classic vehicle like the Montego, Original Equipment Manufacturer (OEM) parts from Ford/Mercury are virtually impossible to find new. Fortunately, the aftermarket provides reliable and affordable replacements that meet or exceed the original specifications. The technology for this simple switch hasn't changed, and quality aftermarket parts are perfectly suitable.
The two main brands you'll find are Standard Ignition and Rostra Powertrain.
- Standard Ignition (Standard Motor Products): Often considered a top-tier aftermarket brand, Standard produces parts known for their durability and reliable performance. They use robust materials and test their switches to ensure proper function. For a critical safety part, spending a little extra for a well-regarded brand like Standard is a wise investment.
- Rostra Powertrain: Rostra is a known aftermarket manufacturer that produces a wide range of automotive components. While they are a viable option, Standard Ignition generally has a stronger, more established reputation for quality in the ignition and electrical switch category.
Pro Tip: Since the Mercury Montego shares its platform with the Ford Torino, parts are often identical. When searching for a brake light switch, you can also look for parts listed for the 1968-1976 Ford Torino to widen your options.
Cost of Replacing a Brake Light Switch (1968-1977 Mercury Montego)
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Part | $16 - $32 |
| Shop Labor | $50 - $100 |
| Total Estimated Cost | $66 - $132 |
Note: Costs are estimates and can vary based on your location, the specific part chosen, and the rates of your repair shop.
Frequently Asked Questions
Is it hard to replace a Montego brake light switch myself?
No, this is a very DIY-friendly job for most owners. The switch is located on the brake pedal support bracket under the dashboard. It typically involves disconnecting the wiring, removing a clip or pin, and swapping the old switch for the new one. The most difficult part is often the uncomfortable position required to work under the dash.
Are there any recalls for the brake light switch on this Montego?
No, searches of the National Highway Traffic Safety Administration (NHTSA) database show no recalls related to the brake light switch for the 1968-1977 Mercury Montego.
Do I need any special tools to replace the switch?
Usually, no special tools are required. Basic hand tools like pliers to remove a cotter pin are typically all that's needed. The switch itself often clips or twists into its bracket.
My brake lights work, but my cruise control doesn't. Could it be the switch?
For the 1968-1977 model years, this is highly unlikely. The brake light switch on these cars is a simple on/off switch for the lights only. Unlike modern cars where the switch communicates with cruise control, ABS, and other systems, the Montego's system is not integrated in that way.
Technical Specifications
OEM Part Numbers: D2ZZ-13480-A C8VY-13480-A
Mechanical plunger-style switch, typically mounted to the brake pedal support bracket.
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.