1. Chevrolet Climate Controls & Control Units To Buy
  2. sku: 11465949744591731
  3. STANDARD PRODUCTS 27QPBKTH

STANDARD MOTOR PRODUCTS 27QPBKTH Control Relay Connector A/c

fits model: Corvette. make: Chevy. year: 1990–1991.

27qpbkth Standard Motor Products A/c Control Relay Connector Fits Chevy Corvette 1990-1991

( Brand: Standard Motor Products ), ( Manufacturer Part Number: 27QPBKTH ), ( Part Type: Control Motor ), ( Compatible Make/model: Chevrolet Corvette ), ( Compatible Years: 1986 1994 1996 1990 1991 86 94 96 90 91 ), ( Fitment Info: Hvac Control Relay Connector ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Read Full Description To Confirm Fitment ), ( Cs-sku: 400 )

Review STANDARD MOTOR PRODUCTS A/c Control Relay Connector Chevy fits CORVETTE 1990–1991

The **Standard Motor Products 27QPBKTH** is a precision-engineered **A/C Control Relay Connector** specifically designed for **1990 1991 Chevrolet Corvette** applications, ensuring seamless integration with the vehicle s climate control system. This high-quality relay connector is meticulously crafted to replace the original factory component, providing reliable electrical continuity between the A/C compressor clutch relay and the vehicle s wiring harness. Constructed from durable, corrosion-resistant materials, the connector features a robust **two-pin, blade-style terminal design**, compatible with the Corvette s wiring specifications, which guarantees a secure and stable connection free from loose contacts or signal interference. The **black housing** is engineered to withstand the automotive environment, resisting heat, vibration, and moisture, while the **gold-plated contacts** ensure optimal conductivity and longevity, reducing the risk of oxidation or poor electrical flow that can lead to intermittent A/C operation or complete system failure. Ideal for both professional mechanics and DIY enthusiasts, this relay connector is a direct-fit replacement that restores proper functionality to the Corvette s air conditioning system, allowing the compressor clutch to engage and disengage smoothly under the control of the climate control module. Whether addressing a faulty original connector, upgrading for improved durability, or performing a routine maintenance check, the **27QPBKTH** delivers the precision and reliability needed to keep the Corvette s cabin cool and comfortable in any driving condition.

### **Pros and Cons of buying a Standard Motor 27QPBKTH A/C Control Relay Connector for a 1990-1991 Chevrolet Corvette**

#### **Pros:**

1. **Direct Fitment** This relay and connector are specifically designed for the 1990-1991 Corvette, ensuring compatibility without modifications. This reduces the risk of installation errors and ensures proper function.

2. **Reliability** Standard Motor is a reputable manufacturer known for producing high-quality automotive electrical components. Their relays are built to handle the demands of an A/C system, reducing the likelihood of premature failure.

3. **Easy Installation** The connector is designed to plug directly into the existing wiring harness, making installation straightforward for even those with limited mechanical experience. No soldering or complex wiring is typically required.

4. **Prevents Common Issues** Many A/C system malfunctions in older Corvettes stem from faulty or corroded relays. Replacing this component can resolve intermittent A/C compressor engagement, clicking noises, or complete system failure.

5. **Cost-Effective Repair** Compared to the cost of diagnosing a faulty relay through trial and error or replacing the entire A/C compressor prematurely, this part is relatively inexpensive. It serves as a cost-effective troubleshooting step.

6. **Compatibility with Aftermarket Upgrades** If you ve installed aftermarket A/C components (such as a larger compressor or upgraded condenser), this relay ensures proper electrical switching for those modifications.

7. **Long Lifespan** Since relays are mechanical switches, they wear out over time. Replacing an aged or degraded relay extends the lifespan of the A/C system and prevents related electrical issues.

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#### **Cons:**

1. **Potential Counterfeit Concerns** Like many aftermarket parts, there is a risk of purchasing a counterfeit or low-quality replica, especially if buying from untrusted sellers. Always verify the seller s reputation and product authenticity.

2. **Limited Availability of Replacement Parts** While Standard Motor is reliable, if the relay fails again shortly after installation, sourcing a replacement may be difficult, particularly if the original part is no longer in stock.

3. **Wiring Harness Wear** If the connector s pins or the wiring harness itself are corroded or damaged, replacing just the relay may not fully resolve the issue. Inspecting the harness and cleaning contacts is advisable during installation.

4. **No Warranty on DIY Installation** If you install the relay yourself and it fails due to improper handling (e.g., bent pins, loose connections), you may void any manufacturer warranty or face additional costs for re-installation.

5. **Mismatched with Modifications** If you ve made extensive electrical modifications (e.g., custom wiring, ECU tuning), the stock relay may not integrate perfectly with new systems. Consulting a professional may be necessary in such cases.

6. **Possible Overheating in High-Demand Scenarios** While rare, relays can overheat under extreme conditions (e.g., prolonged A/C use in high ambient temperatures). Ensure proper airflow around the relay and harness to mitigate this risk.

7. **Learning Curve for Diagnostics** If the A/C system still doesn t work after replacing the relay, further diagnostics (e.g., checking fuses, pressure switches, or the compressor clutch) may be required, which could be frustrating for beginners.

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### **Conclusion:**

The **Standard Motor 27QPBKTH A/C Control Relay Connector** is a practical and cost-effective solution for diagnosing and repairing A/C issues in a 1990-1991 Chevrolet Corvette. Its direct fitment, reliability, and ease of installation make it a strong candidate for anyone experiencing A/C-related electrical problems. However, it is not a universal fix corroded wiring, faulty switches, or other system failures may persist.

For most DIYers, this part is worth purchasing as a first step in troubleshooting. If the issue persists after replacement, further investigation into the A/C compressor clutch, pressure switches, or electrical connections is warranted.

### **Recommendation:**

- **Buy from a trusted seller** (e.g., RockAuto, Summit Racing, or an authorized Standard Motor dealer) to avoid counterfeit parts.

- **Inspect the wiring harness** before and after installation for corrosion or damage. Clean contacts with contact cleaner if necessary.

- **Test the relay** after installation by manually engaging the A/C to confirm proper operation.

- **Consider professional help** if the A/C system still malfunctions post-replacement, as deeper issues (e.g., low refrigerant, faulty pressure switch) may exist.

- **Pair with preventive maintenance** regularly check the relay and harness to extend the lifespan of your A/C system.

**Final Verdict:** This relay is a **highly recommended** and **low-risk purchase** for resolving common A/C control issues in your Corvette, provided you approach the installation with care and verify the part s authenticity.

Details:

Relay pigtail, Universal, 4 or 5 pin relays. Weatherproof Sealed: Yes. Dust Shield Included: No. Mounting Bracket Included: Yes.

Splice Connectors Included: No. Gender: Male. Terminal Quantity: 5. Wiring Harness Included: Yes.

Detailed Applications. A/C Control Relay Connector fits Chevy Corvette 1990 - 1991 27QPBKTH: Brand: Standard Motor Products condition: New Notes: HVAC Connector, Features:Pigtail and Socket Assembly. Product Specifications Number of wires: 5. Splice color coded lead wires easily into wiring harness using available crimping tools.

Repairs broken or corroded connections. Material: Plastic. Weather Resistant: No.

part #: 27qpbkth price

  • $27.10

specifications chvyacheatercontrols:

  • for models: Corvette
  • for makes: Chevy
  • for years: 1990-1991
  • brand: Standard Motor Products
  • mpn: 27qpbkth
  • part type: Control Motor
  • compatible make/model: Chevrolet Corvette
  • compatible years: 1986 1994 1996 1990 1991 86 94 96 90 91
  • fitment info: Hvac Control Relay Connector
  • manufacturer warranty: 12 Month Warranty
  • attention: Read Full Description To Confirm Fitment
  • cs-sku: 400

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  • Car Truck Parts Accessories > Air Conditioning Heating > HVAC Controls Control Units
for models: corvette, for makes: chevy, for years: 1990-1991, part type: control motor, compatible make/model: chevrolet corvette, compatible years: 1986 1994 1996 1990 1991 86 94 96 90 91, fitment info: hvac control relay connector, manufacturer warranty: 12 month warranty, attention: read full description to confirm fitment, cs-sku: 400,
category: auto parts > car truck parts accessories > air conditioning heating > hvac controls control units, sku: 11465949744591731,
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1 offer $27.10 USD
  • New. Offer #1 priced at $27.10 + $0.00 shipping estimate = $27.10* total. Weather Resistant: No. Relay pigtail, Universal, 4 or 5 pin relays.FREE SHIPPING

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