Buick Electra Turn Signal Switch Guide (1967-1975)
Everything an owner needs to know about replacing a faulty turn signal switch in their classic Electra.
- Verify if your 1967-68 model has the rare 'BOYNE' switch, as standard replacements won't fit.
- Replacing the switch is labor-intensive and requires special tools like a steering wheel puller and lock plate compressor.
- A faulty switch can also cause your brake lights to fail, which is a critical safety issue.
- Choose a quality aftermarket brand like Standard Ignition or Rostra, as the cost difference is small compared to the labor involved in a potential second replacement.
Is Your Buick's Turn Signal Switch Failing?
A faulty turn signal switch in a classic 1967-1975 Buick Electra can cause more than just an annoyance; it's a safety issue. When this switch starts to fail, you might notice that your turn signals don't work at all, only work on one side, or fail to cancel after a turn. Because the brake lights are often wired through this switch, a failure can sometimes lead to no brake lights, creating a serious hazard. You might also find that the hazard lights no longer function. These switches are primarily mechanical and contain plastic components that can become brittle and break after 50+ years of use.
Early Year Part Variations
For 1967 and 1968 models specifically, GM sometimes used a different type of switch called a "BOYNE" switch instead of the more common Delco design. While electrically similar, they are not physically interchangeable. It is crucial to identify which type you have before ordering a replacement part. Some switches were also designed for cars with cornering lamps and have extra wires; these can work in a car without cornering lamps, but not the other way around.
Choosing the Right Aftermarket Switch
Finding a New Old Stock (NOS) GM turn signal switch for this generation of Electra is nearly impossible. The market today consists of aftermarket reproductions. Quality can vary, so it's important to understand the options.
- Standard Ignition (SMP): Often considered a reliable aftermarket brand, Standard Ignition produces switches that are widely available. They aim to meet or exceed original specifications. However, reviews can be mixed, with some users reporting perfect fitment and others noting minor issues with materials or connector fit.
- Rostra Powertrain: Rostra is a known manufacturer of automotive electronics, including parts for original equipment manufacturers. Their aftermarket parts are generally considered to be of good quality, engineered to match OE performance.
- Replacement (Store Brands): These are typically the most budget-friendly option. While they will get the job done, the materials may feel less robust than higher-tier brands. For a part that is labor-intensive to install, investing in a better-quality switch from a known brand may prevent you from having to do the job again soon.
Pro Tip: Check Your Column Type
The correct replacement switch will depend on whether your Electra has a standard (non-tilt) or a tilt steering column. The mechanisms are different. Always verify your column type before purchasing a part.
Turn Signal Switch Cost for 1967-1975 Buick Electra
| Part Type | Price Range |
|---|---|
| New Aftermarket Switch | $47.29 - $98.97 |
| Shop Labor for Installation | $200 - $400 |
Frequently Asked Questions
Do I need special tools to replace the switch?
Yes. Replacing the turn signal switch requires removing the steering wheel, which needs a steering wheel puller. You will also need a lock plate compressor tool to remove the lock plate snap ring to access the switch. These tools are essential for the job.
🎬 Learn how to replace a GM turn signal switch.Is this a difficult DIY job?
For a beginner, this is a challenging job. It involves disassembling the upper part of the steering column, carefully handling multiple small parts, and feeding the new wiring harness down the column. Patience and taking pictures during disassembly are key.
🎬 Watch this step-by-step guide on Buick turn signal repair.Will a new switch fix my signals not canceling?
Most likely, yes. The failure of the self-canceling feature is usually due to a broken plastic cam or spring within the switch assembly itself. A new switch includes these components.
🎬 See how to fix a turn signal that won't cancel.Why do my brake lights not work now that the switch is broken?
On these older GM cars, the power for the brake lights is routed through the turn signal switch. This allows the switch to interrupt the brake light on one side when the turn signal is on. If the switch fails internally, it can break the connection for the brake lights entirely.
Helpful Videos
Technical Specifications
OEM Part Numbers: 1893588 8121438
Varies by tilt or non-tilt column and cornering light option.
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.