Pontiac Acadian Headlight Switch Guide for 1968-1987 Models
Having trouble with your Acadian's headlights? This guide will help you find the right replacement switch.
- Symptoms often include flickering lights, no dash lights, or a total failure of the headlights to turn on.
- The Pontiac Acadian used different switches across its production run; ensure you buy the part specified for your exact year.
- Before replacing the switch, check fuses, bulbs, and the floor-mounted dimmer switch, as they can cause similar issues.
- When replacing the switch, always inspect the wiring connector for heat damage or melting and replace it if necessary.
Signs of a Failing Headlight Switch in Your Acadian
When a headlight switch starts to go bad, it can cause several noticeable problems. These issues often start small but can become serious safety hazards. Because the Pontiac Acadian shares its platform with the Chevrolet Nova (1968-1975) and Chevrolet Chevette (1976-1987), symptoms are very similar across these classic GM vehicles.
- Flickering or Intermittent Headlights: Your headlights may flicker or turn off and on by themselves while you are driving. This is often caused by a worn internal circuit breaker in the switch overheating.
- Lights Don't Turn On: The most obvious symptom is when your headlights, taillights, or parking lights fail to turn on at all. This could be a complete switch failure.
- Dash Lights Don't Work or Dim: The rotating dial (rheostat) that controls the brightness of your instrument panel lights is a common failure point. You might lose all dash illumination or the ability to adjust it.
- Switch Only Works in Certain Positions: You may find that you have to jiggle the switch or that only one mode (like parking lights) works correctly.
- Burning Plastic Smell: A smell of burning plastic from the dashboard area can indicate the switch is overheating and melting internally, which is a fire hazard.
Check the Basics First
Before blaming the switch, always check your fuses and headlight bulbs first to make sure they are not the source of the problem. Also, on these older GM cars, the floor-mounted dimmer switch for high beams can fail and cause the headlights not to work at all.
Choosing the Right Aftermarket Headlight Switch
For a vehicle like the 1968-1987 Pontiac Acadian, new Original Equipment Manufacturer (OEM) parts from GM are no longer available. Your options are aftermarket parts. Fortunately, the aftermarket offers good solutions that meet or exceed original quality.
Brand Quality Tiers
Standard Motor Products (Standard Ignition):
Standard is a well-respected brand in the aftermarket that has been around for decades. Their parts are generally considered to be of high quality, often rivaling original equipment. They use copper alloy conductors for good electrical performance and robust materials. For a critical part like a headlight switch, choosing a reputable brand like Standard Ignition is a reliable choice for long-term durability.
Replacement (Store/Generic Brand):
"Replacement" branded parts are typically more budget-friendly options. They are designed to be direct-fit replacements and will restore function to your lighting system. While they are a cost-effective solution, some forum discussions on similar GM vehicles suggest that the quality of the internal components, especially the dash light rheostat, may not be as robust as higher-tier brands. However, for a car that is not a daily driver, a Replacement brand switch can be a perfectly adequate choice.
Pro Tip: Inspect the Connector
When you replace your headlight switch, inspect the wiring connector that plugs into it. If the old switch was overheating, it may have melted or damaged the plastic connector and terminals. A bad connection will cause the new switch to fail prematurely. Replacement connectors are available and should be installed if any damage is found.
Typical Headlight Switch Replacement Costs
The cost for a new aftermarket headlight switch for a 1968-1987 Pontiac Acadian is very reasonable. The job is also straightforward enough for many DIY mechanics.
| Item | Estimated Cost |
|---|---|
| New Aftermarket Headlight Switch | $27.74 - $58.42 |
| Shop Labor | $90 - $150 |
| Total Professional Replacement | $117 - $208 |
Frequently Asked Questions
How do I remove the headlight switch knob on my Acadian?
On most GM vehicles from this era, you'll need to reach up under the dashboard to the body of the headlight switch. There is a small, spring-loaded button on the switch housing. With the knob pulled out slightly, press this button in, and then pull the knob and shaft completely out of the switch.
Are there any recalls for the Pontiac Acadian headlight switch?
No, searches of the National Highway Traffic Safety Administration (NHTSA) database did not find any recalls specifically for the headlight switch on the 1968-1987 Pontiac Acadian.
Is the headlight switch the same for all 1968-1987 Acadians?
No, it is very likely that different switches were used. The Acadian was based on the Chevy Nova platform until 1975 and the Chevy Chevette platform from 1976-1987. Even within the Nova years, GM used different switches. It is critical to enter your vehicle's exact year to ensure you order the correct part. The number and arrangement of the electrical pins on the back will be different.
Can I repair my old headlight switch?
While some people attempt to repair old switches by cleaning the internal contacts or re-soldering connections, it is generally not recommended. The internal components wear out, and a repair may not be reliable. Given the low cost of a new aftermarket switch and the critical safety function of headlights, replacement is the safest and most effective solution.
Technical Specifications
OEM Part Numbers: 1995122 1995123 1995142 1995147 1995149 1995150 1995151 1995163 1995164 1995165 1995173 1995175 1995179 1995184 1995186 1995194
Dash-mounted pull/twist switch. Controls headlights, parking lights, and instrument panel dimming. Features an internal, self-resetting circuit breaker. Terminal count and configuration vary by year.
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.