Ensuring clear rear visibility is crucial for driving safety, especially in adverse weather conditions. A functional defogger relay is essential for activating your vehicle's rear defogger, preventing fog or ice buildup on the rear window. Selecting a reliable replacement ensures consistent performance and peace of mind on the road.
- 24V 20A 5-PIN RELAY: Designed for 24V DC electrical systems with five terminals 30, 85, 86, 87 and 87a. SPDT changeover design provides up to 20A on the normally open circuit and 10A on the normally closed circuit.
- BUILT-IN SUPPRESSION DIODE: Integrated suppression diode helps control coil voltage spikes when switching. This relay is polarity sensitive; terminal 86 is positive. Compare the wiring diagram and terminal layout with your original relay before...
- PART NUMBER CROSS-REFERENCE: Replaces or cross-references V23234-A0004-X051, 0332209204, A0035459805, A0045453305, A0045457805, A0005455805, A0045451105, A0045456405, 4RD007903-021 and 4RD933332-091.
- FOR COMMON 24V ELECTRICAL CIRCUITS: Suitable for compatible rear window defogger and heating circuits, battery disconnect systems, main-current switching, central electrical systems and power distribution applications using the same relay specification.
- Practical Functio: This product is compatible with the most versatile 12V 5-pin automotive relays, it switches 40A. This relay ensures reliable operation of high-current electrical components in vehicles.
- Quality Materials: This 5Pin relay shell is made of PA66 material, which has good thermal conductivity, It also utilizes copper-nickel-plated terminals for durability and efficient electrical conductivity. The overall structure of the product is compact...
- Wide Application: It is ideal for various automotive applications such as automotive wiring harness modification rear window defogger, battery isolator, security systems, compressor.
- Package Includes: The package comes with 4 pieces of automotive replacement electrical system relays, providing you with sufficient quantity, bringing you lots of convenience.
- 【Practical Function】: AC relays can be used to control a variety of electrical equipment by controlling the on-off of a circuit. And it can convert low voltage and small current signals into high voltage and high current control signals to realize...
- 【Excellent Quality】: It is made of high quality brass with good corrosion resistance and high electrical conductivity, ensuring a secure electrical connection even under prolonged use. It can effectively resist environmental erosion and extend the...
- 【High Performance】: This relay offers significant advantages in the automotive industry, responding precisely to AC electrical signals for fast on-off control of circuits. Please note: The number in the last row of the product is the serial number...
- 【Easy to Carry】: It measures 0.87 x 0.57 x 1.07 inches and is very easy to carry. It is suitable for ordinary cars and easy to operate. You only need to connect the relay with wires, no other tools are needed, convenient for you to use and replace, so...
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
- Replace Part Number: 15328864,12193604，38860-86Z40, 8-12177-236-0, 8-12193-604-0, 8-13503-102-0, 89057651, 96190189, 0K2A1-67-740, 12088592, 12135175, 12177236, 12193614, 13503102, 19106615, 19116860, PW853596, OK2A167740, 9026316
- 40A High-Switch Capacity: Handles 12V/40A loads for demanding systems like A/C compressors, radiator fans, fuel pumps, horns, and defoggers.
- For GM Vehicle Compatibility: Direct replacement for Chevy Silverado (2003-2010), Impala (1994-2011), GMC Trucks (1995-2009), Buick Lucerne (2006-2010), Pontiac Grand Prix, and more.
- SPDT Versatility: Single Pole Double Throw (SPDT) design lets you switch between two circuits, ideal for complex automotive electrical setups.
- Spst Low Profile Micro Iso Automotive Relay
- 20 amps/NO
- Fully automated assembly,
- Environment-friendly and light weight,
- OEM Replacement Relay
- Fits Many Toyota, Lexus, Mitsubishi, & Chrysler Models
- Fixes Taillight, Horn, Cooler / AC, & Defogger / Defrost
- 4 Pin, 12, Volt
- Item Dimensions 1.96 x 1 x 1.2 inches, Item Weight 0.07 Pounds
- Part use: Front to rear. 4.7L. Luggage area, daytime running lamp. MR2. Headlamp relay, Headlamp, Defogger, Hot Air Intake.
- Description: Plug In 4 Pins 12 VDC relay for Toyota Avalon, Camry, Corolla, Highlander, RAV4, etc.
- Reference OE/OEM Number: 90987-02006, 056700-6912, 90987-02011, 056700-9070
- Specs + Interchange OEs: 12V coil; 5-pin micro-ISO footprint; compact body. Cross-reference: 90080-87025 (service PN). Supersession trail associated with that service PN includes 90987-04006, 90987-04010, 90080-87031. Commonly used for heater...
- Operation, placement & symptoms: Typically located in the engine-compartment fuse/relay box or the instrument-panel junction block (varies by vehicle). Controls blower/defogger circuits; failure can cause inoperative or intermittent HVAC blower. Plug-in...
- Compatible with Toyota Camry — year-by-year (blower motor): 2002 Compatible with Toyota Camry Blower Motor Relay; 2003 Compatible with Toyota Camry Blower Motor Relay; 2004 Compatible with Toyota Camry Blower Motor Relay; 2005 Compatible with Toyota...
- Compatible with Toyota Camry — additional years: 2018 Compatible with Toyota Camry Blower Motor Relay; 2019 Compatible with Toyota Camry Blower Motor Relay; 2020 Compatible with Toyota Camry Blower Motor Relay; 2021 Compatible with Toyota Camry Blower...
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How to Choose the Best Automotive Replacement Defogger Relays
Understanding Compatibility and Specifications
When selecting a replacement defogger relay, the most critical factor is ensuring it is fully compatible with your vehicle's make, model, and year. Automotive electrical systems are highly specific, and a relay designed for one vehicle may not function correctly, or even fit, in another. Consult your vehicle's owner's manual or a reputable automotive parts database to identify the precise OEM part number or equivalent specifications. Pay close attention to the relay's pin configuration, voltage rating (typically 12V), and amperage capacity to match the original unit.
Prioritizing Quality and Durability
A defogger relay is a vital electrical component, and its reliability directly impacts your safety. Opt for relays from established manufacturers known for producing high-quality automotive parts. These relays often feature robust housing, high-grade internal components, and precise manufacturing tolerances that contribute to a longer lifespan and consistent performance. While some aftermarket options may be more affordable, investing in a durable relay can prevent premature failure and the need for frequent replacements, offering better long-term value.
Installation and Safety Considerations
Replacing a defogger relay is often a straightforward process, but proper installation is key to its functionality and safety. Before attempting any electrical work, always disconnect the vehicle's battery to prevent short circuits or electrical shocks. Locate the existing relay, which is typically found in the fuse box under the hood or in the passenger compartment. Ensure the new relay seats firmly into its socket. If you are unsure about the installation process, it is advisable to consult a professional mechanic to avoid potential damage to your vehicle's electrical system.
Recognizing Symptoms of a Failing Relay
Knowing the signs of a failing defogger relay can help you address the issue promptly. The most common symptom is a non-functional rear defogger, even when the switch is activated and the fuse is intact. You might also notice an audible click from the relay that doesn't result in defogger activation, or intermittent operation where the defogger works sporadically. In some cases, a burning smell or visible discoloration on the relay itself could indicate an internal fault, signaling an urgent need for replacement to restore clear rear visibility.
