1968 Dodge P375 Headlight Switch: A Complete Guide
Having trouble with your lights? Your headlight switch might be the problem.
- A failing headlight switch can cause flickering lights, total light failure, or loss of dash lights.
- This is a simple, DIY-friendly repair that takes less than an hour for most owners.
- No recalls are on record for this part; failure is due to age and normal wear.
- Consider installing a headlight relay harness to protect the new switch and improve headlight performance.
Is Your Headlight Switch Failing? Common Symptoms
On a straightforward vehicle like the 1968 P375, headlight switch problems are usually easy to spot. The wiring is simple, and the switch itself handles the full electrical load, causing it to wear out. Here’s what to look for:
- Lights Won't Turn On: The most obvious sign is when your headlights or taillights don't work at all, even with good bulbs and fuses.
- Flickering Headlights: Lights that flash on and off while you're driving often point to a bad internal circuit breaker in the switch. This happens as the switch overheats from age and corrosion.
- Can't Switch Between High and Low Beams: If you have trouble with your high beams, the issue could be the main headlight switch or the separate dimmer switch on the floor.
- Dash Lights Don't Work or Dim: The rotating part of the switch that controls the instrument panel lights can fail, leaving you without dash lights even if the headlights work. Sometimes, running the dimmer on any setting but full bright can cause the switch to overheat.
- Melted Connector or Burning Smell: In some cases, a failing switch can get so hot that it melts its own plastic connector. You might notice a burning plastic smell from the dashboard area.
Pro Tip: Check the Dimmer Switch Too
Your P375 also has a separate high/low beam dimmer switch, usually on the floor. Sometimes, a failure in the floor dimmer can make it seem like the main headlight switch is bad. If your headlights don't work at all, it's worth checking both components.
Choosing the Right Aftermarket Headlight Switch
Finding a new original equipment (OEM) headlight switch for a 1968 vehicle is nearly impossible. The good news is that aftermarket parts are available, affordable, and generally reliable for this application.
For your Dodge P375, you have two main brand tiers to consider:
- Standard Ignition: A well-known and respected brand in the aftermarket world. Their switches are built to meet original specifications and often feature quality materials like copper conductors for better performance. For a critical part like a headlight switch, Standard Ignition is a solid choice that technicians trust.
- Replacement: This is a value-oriented brand. These switches are designed to be a direct fit and function like the original part at a lower cost. For an older, simple vehicle, a 'Replacement' brand switch is often a perfectly adequate solution to get your lights working again.
Headlight Switch Replacement Cost for 1968 Dodge P375
Replacing the headlight switch is an affordable repair. The parts are not expensive, and if you have a shop do it, the labor is minimal.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Switch | $25 - $32 |
| Shop Labor | $50 - $100 |
| Total Estimated Cost | $75 - $132 |
Note: Costs are estimates and can vary based on your location and specific repair shop rates. Finding a New OEM or Used OEM part is highly unlikely.
Frequently Asked Questions
Is it hard to replace the headlight switch myself?
No, this is a very DIY-friendly job for most owners. It usually involves disconnecting the battery, removing the switch knob, unscrewing a retaining nut on the dash, and reaching under the dash to unplug the electrical connector. The entire process should take less than an hour.
Are there any recalls for the 1968 Dodge P375 headlight switch?
No, searches of the National Highway Traffic Safety Administration (NHTSA) database show no open recalls for the headlight switch on the 1968 Dodge P375. Any recalls would also be long expired due to the vehicle's age.
Should I upgrade my headlight wiring at the same time?
It's a good idea. On many older vehicles, the original wiring is undersized for modern headlights. Installing a headlight relay harness takes the high-amperage load off your new headlight switch, which can make the switch last much longer and may even make your headlights brighter. This is a popular and recommended upgrade.
What's the difference between the headlight switch and the dimmer switch?
The main headlight switch is on the dashboard and turns the power on for the parking lights and headlights. The dimmer switch is typically a button on the floor that you press with your foot to toggle between high beams and low beams. A failure in either switch can cause your headlights to stop working.
Technical Specifications
Dash-mounted pull-style switch with integrated instrument panel light dimmer (rheostat).
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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.