Dodge D150 Brake Light Switch Guide for 1977-1993 Models
Solve common brake light problems on your classic Dodge D150 truck with this guide.
- A faulty brake light switch is a critical safety issue that should be addressed immediately.
- Symptoms are straightforward: brake lights don't work, stay on, or work intermittently.
- Replacement is a simple, fast, and inexpensive DIY job for most owners.
- Standard Ignition is a reliable aftermarket brand for this part; OEM parts are likely unavailable.
Is Your Brake Light Switch Failing?
The brake light switch is a common failure point on many vehicles, including the Dodge D150. Because these trucks use a simple electrical system without modern computer controls, you won't see a check engine light for this problem. Instead, you need to watch for clear, physical signs that the switch is going bad.
Safety Warning: No Brake Lights
Driving without working brake lights is extremely dangerous and illegal. If you confirm your brake lights are not working, do not drive the truck until the issue is repaired. You could be rear-ended, and you will get a traffic ticket.
Common Failure Symptoms
A bad brake light switch on your D150 will cause one of three main symptoms:
🎬 Watch this video to see common bad brake switch symptoms.- Brake Lights Don't Work: This is the most dangerous symptom. When you press the brake pedal, the lights at the rear do not turn on at all.
- Brake Lights Stay On: The switch can fail in the 'on' position, causing the brake lights to remain lit even when your foot is off the pedal. This will confuse other drivers and will drain your battery overnight.
- Intermittent Operation: The lights may flicker or only work some of the time. This can be caused by worn internal contacts in the switch.
Choosing the Right Aftermarket Switch
For a vehicle from this era, original equipment (OEM) Mopar parts are often discontinued and hard to find. The aftermarket is the most practical source for a new brake light switch. For the 1977-1993 D150, there is one primary aftermarket brand available.
Standard Ignition (Standard Motor Products): This is a well-known and generally trusted brand in the aftermarket for electrical components. They produce parts that are designed to meet or exceed original specifications. For a simple but critical part like a brake light switch, Standard Ignition is a reliable choice that provides good value. There are two different switches available depending on your truck's model year and features, so be sure to match the part to your specific vehicle.
Pro Tip: Check the Simple Stuff First
Before buying a new switch, check the fuse for the brake lights and inspect the bulbs to make sure they aren't just burned out. If only one light is out, the problem is the bulb, not the switch. Also, check that the brake pedal is returning fully to the top of its travel to depress the switch plunger.
Brake Light Switch Cost Comparison
| Part Type | Estimated Cost |
|---|---|
| New OEM | N/A (Likely Discontinued) |
| New Aftermarket (Standard Ignition) | $20.23 - $57.72 |
| Used OEM | $15 - $40 (Varies by source) |
| Shop Labor | $50 - $100 |
Frequently Asked Questions (FAQ)
Where is the brake light switch located on a Dodge D150?
The brake light switch is located under the driver's side dashboard. It is mounted on a metal bracket directly above the brake pedal arm. You will need to look up from the floor to see it.
How hard is it to replace the brake light switch?
This is a very easy DIY job that most owners can do themselves in under 30 minutes. It involves unplugging the electrical connector and then twisting or unclipping the switch to remove it from its bracket. 🎬 See how to test and replace your brake light switch. The most difficult part is the awkward position required to work under the dash.
Can a bad brake light switch drain my truck's battery?
Yes. If the switch fails in the closed or 'on' position, your brake lights will stay on constantly, even when the truck is off. This will drain the battery, often overnight.
Are there any recalls for the D150 brake light switch?
No. Research of the National Highway Traffic Safety Administration (NHTSA) database shows no recalls or technical service bulletins (TSBs) specifically for the brake light switch on the 1977-1993 Dodge D150.
What is the difference between the two available switches?
Over the long production run of the D150, Dodge used slightly different switch designs. One forum user noted a difference between the switch in a '78 model versus a '92 model, with the later version having a more complex connector. The two available aftermarket products likely correspond to these different designs. It is important to use your vehicle's year to select the correct part.
Helpful Videos
Technical Specifications
OEM Part Numbers: 2926280
2-terminal, push-on, spring-activated plunger switch.
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.