Standard Ignition DFG40 Defroster Switch
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Standard Ignition

Standard Ignition DFG40 Defroster Switch

Brand Standard Ignition DFG40
Connector Gender Female
Terminal Gender Male
Terminal Type 5 Blade Terminals
Fits Mazda · 10 vehicles

Direct switch replacement. Female connector and 5 blade terminals for straightforward installation.

5 blade terminals. Provides a secure electrical connection for the switch.

Female connector. Matches the harness side for a clean, reliable fit.

Cross-references Standard Ignition DFG40, B45566460A and PA1383 for the same application. See all 4.

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Window Defroster Switch Connector for Mazda

Standard Ignition DFG40 is a female connector with male blade terminals for window defroster switch and related rear HVAC electrical connections. It is built with 5 blade terminals and is listed for 1990-1994 Mazda 323 and 1990-1994 Mazda Protege applications.

Key Features

  • Female connector housing with male terminal ends
  • 5 blade terminals for the specified circuit layout
  • Direct-fit electrical connector for rear defroster switch service
  • Listed for 1990-1994 Mazda 323 and 1990-1994 Mazda Protege
  • Standard Ignition DFG40 replacement part

Detailed Description

Standard Ignition DFG40 is a replacement window defroster switch connector used in rear electrical and HVAC-related circuits. The connector is specified with female connector gender, male terminal gender, and five blade terminals, making it a practical service part when the original connector is damaged, heat-affected, or no longer making a secure electrical connection. This part is listed for Mazda 323 and Mazda Protege models from 1990 through 1994, including rear window defogger module connector use and related harness applications noted for rear HVAC floor mode door actuator and power seat switch connections.

This part cross-references B45566460A for the same application.

What It Helps Fix

  • Broken or cracked rear defroster switch connector housing
  • Loose blade-terminal contact at the switch or harness
  • Intermittent rear window defogger operation
  • Heat-damaged or corroded electrical connector terminals
  • Electrical connection issues in rear HVAC or seat switch circuits

Installation Notes and Tips

Verify terminal count, connector gender, and blade style before installation. Match the existing harness layout on the vehicle and inspect adjacent wiring for heat damage, corrosion, or pushed-out terminals. Confirm the connector is being used on the correct rear defroster or related circuit before final assembly.

Quality Assurance

Standard Ignition replacement electrical components are cataloged to match the specified application details for service use on Mazda 323 and Mazda Protege models.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1994Mazda323N/ARear window defogger module connector compatible with rear HVAC floor mode door actuator harness and power seat switch.
1994MazdaProtegeN/ARear window defogger module connector compatible with rear HVAC floor mode door actuator harness and power seat switch.
1993Mazda323N/ARear window defogger module connector compatible with rear HVAC floor mode door actuator harness and power seat switch.
1993MazdaProtegeN/ARear window defogger module connector compatible with rear HVAC floor mode door actuator harness and power seat switch.
1992Mazda323N/ARear window defogger module connector compatible with rear HVAC floor mode door actuator harness and power seat switch.
1992MazdaProtegeN/ARear window defogger module connector compatible with rear HVAC floor mode door actuator harness and power seat switch.
1991Mazda323N/ARear window defogger module connector compatible with rear HVAC floor mode door actuator harness and power seat switch.
1991MazdaProtegeN/ARear window defogger module connector compatible with rear HVAC floor mode door actuator harness and power seat switch.
1990Mazda323N/ARear window defogger module connector compatible with rear HVAC floor mode door actuator harness and power seat switch.
1990MazdaProtegeN/ARear window defogger module connector compatible with rear HVAC floor mode door actuator harness and power seat switch.
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — DFG40B45566460APA1383S52022