HomeHVAC > RelaysStandard Ignition RY-76 A/C Compressor Control Relay
Part #: RY-76

Standard Ignition RY-76 A/C Compressor Control Relay

⚙️ 13 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, K5 Blazer, S10, S10 Blazer, S15, and S15 Jimmy
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Reliable A/C Compressor Control Relay for Chevrolet and GMC Vehicles

The Standard Ignition RY-76 A/C Compressor Control Relay is designed to provide dependable operation for your vehicle's HVAC system. Specifically compatible with Chevrolet and GMC models such as the K5 Blazer, S10, S10 Blazer, S15, and S15 Jimmy, this relay ensures proper control of your air conditioning compressor.

  • Connector Gender: Female with 1 rectangular connector
  • Terminal Type: 4 male blade terminals for secure electrical connections
  • Voltage: 12V operation suitable for standard automotive electrical systems
  • Includes mounting bracket(s) for easy installation
  • Continuous duty: No, designed for intermittent compressor control

Technical Details and Features

The RY-76 relay from Standard Ignition is engineered to control the A/C compressor clutch engagement in select Chevrolet and GMC trucks and SUVs. Featuring a female rectangular connector and four male blade terminals, this relay provides a reliable electrical interface. The included mounting bracket simplifies installation and ensures a secure fit within the HVAC relay panel. Operating at 12 volts, this relay is designed for intermittent duty cycles typical of A/C compressor control, preventing overheating and extending component life.

Compatible Vehicles and Applications

This A/C compressor control relay is compatible with the following vehicles:

  • Chevrolet K5 Blazer
  • Chevrolet S10 and S10 Blazer
  • Chevrolet S15
  • GMC S15 Jimmy

Use the Standard Ignition RY-76 relay to address issues related to A/C compressor engagement and HVAC system reliability in these models.

Common Issues Resolved by This Relay

  • Intermittent or no A/C compressor clutch engagement
  • HVAC system failing to activate cooling properly
  • Electrical relay failure causing compressor cycling problems
  • Overheating or relay contact wear leading to HVAC malfunctions

Installation Notes and Tips

Before installation, ensure the vehicle's battery is disconnected to prevent electrical shorts. The relay's female rectangular connector and male blade terminals should match the factory wiring harness for a direct fit. Use the included mounting bracket to secure the relay firmly in place. Verify proper relay orientation and connection to avoid HVAC system faults. After installation, test the A/C compressor operation to confirm correct relay function.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The RY-76 relay undergoes rigorous quality control to ensure reliable performance in Chevrolet and GMC HVAC systems. While specific warranty details may vary, Standard Ignition typically offers coverage against defects in materials and workmanship to support long-term vehicle operation.

BrandStandard Ignition
Part NumberRY-76
Connector GenderFemale
Connector ShapeRectangular
ContentsRelay
Continuous DutyNo
FunctionsRelay
Mounting Bracket(s) IncludedYes
Terminal GenderMale
Terminal TypeBlade
Voltage12

This part fits 13 vehicles. Search below:

YearMakeModelPositionNotes
1984ChevroletK5 BlazerN/AAt Brake Pedal Support
1984ChevroletS10N/AAt Brake Pedal Support
1984ChevroletS10N/A
1984ChevroletS10 BlazerN/A5 Term ABS Relay
1984GMCS15N/A
1984GMCS15 JimmyN/A
1983ChevroletK5 BlazerN/A
1983ChevroletS10N/A
1983ChevroletS10 BlazerN/A5 Term ABS Relay
1983GMCS15N/A
1983GMCS15 JimmyN/A
1982ChevroletS10N/A
1982GMCS15N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

14048054199561R13303590556-178788922871AR198AR228MT0523R684RAA2161

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.