1. NISSAN Controls & Control Units On Sale
  2. sku: 9308328863961731
  3. API TECH 59WCTD

API SERVICE TECH 59WCTD Control Relay Stanza A/c

fits make: Nissan. year: 1985–1986.

59wctd Api Service Tech A/c Control Relay Fits Nissan Stanza 1985-1986

( Brand: Api Service Tech ), ( Manufacturer Part Number: 59WCTD ), ( Part Type: Control ), ( Compatible Make/model: Nissan Stanza ), ( Compatible Years: 1985 1986 85 86 ), ( Fitment Info: Service Tech 6 Blade Terminal; Brown; Square; Skirted ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Read Full Description To Confirm Fitment ), ( Cs-sku: 400 )

Review API SERVICE TECH A/c Control Relay Nissan Stanza fits 1985–1986

The **59WCTD A/C Control Relay** is a precision-engineered electrical component designed exclusively for Nissan Stanza models produced between 1985 and 1986, serving as the critical interface between the vehicle s air conditioning system and its control circuitry. This relay acts as a high-performance switch, managing the power flow to the A/C compressor clutch, ensuring smooth and reliable engagement when the driver activates the climate control system. Crafted with durable materials and optimized for the specific electrical demands of the Stanza s wiring harness, this relay is built to withstand repeated cycling without degradation, preventing common issues like intermittent A/C operation, blown fuses, or premature wear on the compressor clutch. Its compact yet robust design integrates a normally open (NO) contact mechanism, allowing the relay to complete the circuit only when the A/C control module sends the appropriate signal, thus protecting the system from voltage spikes and ensuring efficient power distribution. Ideal for both professional mechanics and DIY enthusiasts, this relay is a direct-fit replacement for the original equipment (OEM) component, maintaining compatibility with the Stanza s factory wiring and control logic while offering enhanced reliability and longevity compared to aftermarket alternatives. Whether addressing a malfunctioning A/C system, upgrading an existing setup, or performing routine maintenance, this relay provides a seamless solution to restore or optimize climate control performance in these classic Nissan models.

### **Pros and Cons of buying a API Service 59WCTD A/C Control Relay for a Nissan Stanza (1985 1986)**

#### **Pros:**

1. **Direct Compatibility** The API 59WCTD relay is specifically designed for Nissan vehicles from the mid-1980s, including the Stanza model. This ensures a proper fit without modifications, reducing the risk of installation errors.

2. **Reliability** API is a well-known brand in the automotive industry, known for producing high-quality electrical components. The relay is built to withstand frequent switching cycles, which is essential for A/C control systems that engage and disengage repeatedly.

3. **Easy Installation** The relay is designed for straightforward replacement, requiring minimal tools and technical skill. Most users can swap it out in under an hour, especially if they have experience with basic wiring or relay swaps.

4. **Cost-Effective Fix** If the original relay has failed, replacing it with this part is significantly cheaper than repairing or replacing the entire A/C compressor or control module. It often resolves issues like intermittent A/C operation, no cooling, or erratic fan behavior.

5. **Prevents Further Damage** A faulty relay can cause electrical surges or incomplete power delivery, potentially damaging other components like the A/C clutch or control board. Replacing it early can prevent more expensive repairs down the line.

6. **Widely Available** As a common OEM or aftermarket part, it can be easily sourced from auto parts stores, online retailers, or directly from API distributors, ensuring quick replacement availability.

7. **Durability** The relay is constructed with materials that resist heat and corrosion, which is important for under-hood applications where temperatures can fluctuate widely.

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#### **Cons:**

1. **Potential Counterfeit Risks** Purchasing from untrusted sellers (especially online marketplaces) may result in counterfeit or low-quality replicas. These can fail prematurely or cause electrical issues, negating the benefits of a genuine part.

2. **Misdiagnosis Risk** If the actual problem lies elsewhere (e.g., a faulty compressor clutch, low refrigerant, or a failing pressure switch), replacing just the relay may provide temporary relief but not a permanent fix. A thorough diagnosis is necessary to avoid repeated failures.

3. **Compatibility Variations** While the API 59WCTD is designed for the Nissan Stanza, slight variations in wiring harnesses or relay pinouts could exist between different model years or trims. Double-checking the wiring diagram before installation is advisable.

4. **Limited Lifespan** Like all electrical components, relays degrade over time due to heat, vibration, or electrical stress. While this relay is reliable, it may eventually fail again, requiring another replacement.

5. **Skill Dependency** While installation is simple, inexperienced users might accidentally damage wiring or misalign pins, leading to improper function. Testing the relay after installation (e.g., by swapping it with a known-good relay from another system) can help verify its operation.

6. **Price Sensitivity** Compared to some generic or no-name relays, the API part may be slightly more expensive. However, the trade-off in reliability often justifies the cost for critical components like A/C control.

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### **Conclusion**

The **API Service 59WCTD A/C Control Relay** is a **strong, cost-effective solution** for fixing A/C-related issues in a 1985 1986 Nissan Stanza, provided the root cause is confirmed to be a faulty relay. Its compatibility, reliability, and ease of installation make it a practical choice for DIYers and mechanics alike. However, **purchasing from reputable sources** and ensuring the relay is the actual cause of the problem are critical to avoiding frustration or wasted money.

If the A/C system exhibits symptoms like:

- No cooling when the compressor engages,

- Intermittent fan or compressor operation,

- Clicking noises without cooling,

- Error codes related to the A/C control circuit,

then replacing the relay is a **worthwhile first step**. If symptoms persist after replacement, further diagnostics (e.g., checking refrigerant levels, testing the compressor clutch, or inspecting the control module) are necessary.

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### **Recommendation**

1. **Verify the Problem** Before purchasing, confirm that the relay is indeed the issue. Test it by swapping it with a relay from another system (e.g., the horn or horn relay) to see if the A/C functions properly. If it does, the original relay is faulty.

2. **Buy from Trusted Sources** Purchase the API 59WCTD relay from **authorized dealers, reputable online retailers (e.g., RockAuto, Amazon with verified sellers), or local auto parts stores** to avoid counterfeit parts.

3. **Follow Installation Guidelines** Refer to the **Nissan Stanza wiring diagram** (available in service manuals or online) to ensure correct pin alignment and wiring connections. Double-check polarity to prevent damage to the relay or other components.

4. **Test After Installation** After replacing the relay, **test the A/C system thoroughly** check for proper compressor engagement, fan operation, and cooling performance. If issues persist, consult a mechanic to diagnose other potential causes.

5. **Consider Preventative Maintenance** If the relay fails frequently, investigate underlying issues like **electrical shorts, corroded connections, or a failing A/C control module**, as these could contribute to premature relay failure.

**Final Verdict:** The **API 59WCTD relay is a recommended replacement** for the Nissan Stanza s A/C control relay, offering a balance of reliability and ease of use. However, always ensure the problem is isolated to the relay before proceeding with the purchase.

Details:

Terminal Quantity: 6. API SERVICE TECH A/C Control Relay fits Nissan Stanza 1985 - 1986 59WCTD: Brand: condition: New Notes: 6 Blade Terminal; Brown; Square; Skirted, Specifications Terminal Type. Detailed Applications Years: Vehicle: 1985 - 1986 Nissan Stanza. Mounting Bracket Included: No.

Terminal Gender: Male.

part #: 59wctd price

  • $40.30

specifications nssnheatcontrol:

  • for makes: Nissan
  • for years: 1985-1986
  • brand: Api Service Tech
  • mpn: 59wctd
  • part type: Control
  • compatible make/model: Nissan Stanza
  • compatible years: 1985 1986 85 86
  • fitment info: Service Tech 6 Blade Terminal; Brown; Square; Skirted
  • 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 makes: nissan, for years: 1985-1986, part type: control, compatible make/model: nissan stanza, compatible years: 1985 1986 85 86, fitment info: service tech 6 blade terminal; brown; square; skirted, 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: 9308328863961731,
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