Standard Ignition RY-20 A/C Compressor Control Relay

Standard Ignition RY-20 A/C Compressor Control Relay

Standard Ignition RY-20 is a 12-volt A/C compressor control relay built for HVAC relay applications that demand stable electrical switching and reliable connector fit. It uses a 5-blade male terminal layout with a female rectangular connector and includes a mounting bracket for applications that require it.

Compatible With select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles from 1976-1992, including applications such as Chevrolet Caprice, Oldsmobile Cutlass Ciera, and Pontiac Bonneville. This part cross-references Gates 19820 for the same application.

Key Features

• 12 V relay for HVAC and A/C compressor control circuits
• 15 amp amperage rating
• Female rectangular connector with 1 connector cavity
• 5 male blade terminals for vehicle-specific relay sockets
• Mounting bracket included for bracketed installations
• Composite housing helps protect against harsh underhood temperatures
• Brass or copper contacts are used where specified for wear resistance

Detailed Description

The Standard Ignition RY-20 is an A/C compressor control relay engineered for older GM HVAC systems that use a rectangular relay format and 5-terminal blade connection. It is listed across a broad range of Buick Regal, Chevrolet Monte Carlo, Oldsmobile 98, Pontiac Grand Prix, and related models, including fitments with high blower, manual AC, and HVAC automatic temperature control notes. Standard Ignition manufactures this relay under stringent quality requirements, with TS16949 and ISO9001 certified plants supporting consistent part-to-vehicle matching.

What It Helps Solve

• Intermittent A/C compressor relay operation
• HVAC blower or compressor control faults tied to relay failure
• Heat-related relay housing damage in the engine compartment
• Connector mismatch on vehicles using a 5-blade rectangular relay
• Electrical wear at relay contacts from repeated cycling

Installation Notes and Tips

• Verify connector shape, terminal count, and bracket style before installation.
• Check the vehicle’s HVAC configuration, since some listed applications exclude automatic temperature control.
• Confirm the relay location and note-specific fitment details such as high blower, manual AC, or metal housing requirements.
• Inspect the socket for corrosion, heat damage, or loose terminals before installing the new relay.

Quality Assurance

Standard Ignition controls manufacturing from component selection through finished product assembly. The brand’s certified production processes and OE-focused quality standards support consistent fit and dependable relay performance for the listed applications.