2025 Connector Trends Report: The 10 Most Installed Connectors
Electrical connectors are showing up on work orders more than ever in today's repair bays. These small components, from fog lamps and horns to advanced radar sensors, have become critical to vehicle safety and drivability.
At FindPigtails.com, we track connector demand across thousands of repair jobs annually. For 2025, we’ve identified the 10 most installed connectors so far, which technicians are replacing most often due to collision damage, exposure, and everyday wear.
For collision repair professionals, this list is more than just trivia. It’s a roadmap for stocking the right parts, avoiding repair delays, and showing insurance partners that a connector repair is possible without replacing an entire harness.
Z27C2 (2-Pin Connector) – Fog Lamps & Headlights
One of the highest-volume connectors this year, the Z27C2 is found in fog lamps and headlight systems across Honda, Toyota, Lexus, Subaru, Mazda, and Mitsubishi. It’s especially common on high-volume vehicles like the Honda Civic and Toyota Camry.
Why it’s trending: Fog lamp and headlight connectors are among the first casualties in front-end collisions. With so many supported makes and models, the Z27C2 has become a shop staple.
Tech Tip: Always confirm pin count and housing style — fog and headlight connectors often look similar across different vehicles.
C61A2 (2-Pin Connector) – Audible Warning & Side Markers
The C61A2 covers audible warning speakers and side marker lamps, with fitments across Mitsubishi, Toyota, Mazda, and Chevy.
Why it’s trending: Warning speakers and side markers are exposed to both collision damage and weather intrusion, making their connectors vulnerable.
Tech Tip: Verify the application — this connector supports both lighting and audible systems, so confirm before replacement.
Y11A1 (1-Pin Connector) – Horn Systems
This Y11A1 single-pin connector is widely used in horn systems across Toyota, Lexus, Subaru, and Scion.
Why it’s trending: Horns are mounted up front, leaving them highly vulnerable in minor accidents and water exposure.
Tech Tip: With many models supported, a visual cross-check against the part image saves time and avoids returns.
L64A2 (2-Pin Connector) – Multi-System Coverage
The L64A2 is a versatile connector used in A/C compressors, ambient sensors, fog lamps, battery sensors, keyless entry antennas, and more. Coverage includes GM, Dodge, Jeep, Ram, Mercedes, BMW, Jaguar, Land Rover, Volvo, and Tesla.
Why it’s trending: This connector is a high-rotation part with many applications across high-volume models like the Chevy Silverado, Dodge Ram, and Mercedes-Benz SUVs.
Tech Tip: Confirm the system before replacement — this connector looks the same across lighting, HVAC, and sensor applications.
Y110B2 (2-Pin Connector) – Multi-Application Connector
Used across A/C compressors, brake fluid level sensors, fog lamps, washer pumps, and lighting, the Y110B2 spans Toyota, Subaru, Lexus, Ford, Dodge, Kia, Hyundai, and Nissan.
Why it’s trending: It’s tied to safety-critical systems like ABS and brake fluid sensors as well as common collision damage points like fog lamps and washer pumps.
Tech Tip: Identify the system first — this connector serves multiple functions, making misidentification easy.
L42B2 (2-Pin Connector) – Nissan & Infiniti Lighting
Found in fog lamps and headlight low beams, the L42B2 is especially common across Nissan and Infiniti models, with additional fitments in Buick, Jeep, Alfa Romeo, and Scion.
Why it’s trending: Models like the Nissan Altima and Rogue dominate U.S. roadways, driving steady demand.
Tech Tip: Pay close attention to pin orientation when replacing on headlight vs. fog lamp systems.
L41A2 (2-Pin Connector) – Honda/Acura Applications
The L41A2 shows up in fog lamps, horns, hood sensors, and ABS wheel speed sensors on Honda and Acura models.
Why it’s trending: Popular models like the Honda Accord, CR-V, and Acura MDX mean this connector is used daily in repair bays.
Tech Tip: Identify system location first — fog lamp vs. ABS vs. horn — since the same connector serves multiple roles.
G12A2 (2-Pin Connector) – Hyundai, Kia & Genesis Coverage
This G12A2 connector covers horns, DRLs, reverse lamps, and side markers across Hyundai, Kia, and Genesis models.
Why it’s trending: Hyundai and Kia have surged in market share, with models like the Hyundai Elantra, Kia Forte, and Genesis G80 driving demand.
Tech Tip: Inspect for moisture intrusion. Corrosion is a leading cause of failure in horn and lamp connectors.
L72A8 (8-Pin Connector) – ADAS Radar & Blind Spot Systems
The L72A8 is a vital connector used in blind spot sensors and front radar/sonar systems across Audi, Honda, Hyundai, Nissan, Mercedes-Benz, VW, Tesla, and more.
Why it’s trending: With ADAS now standard, even a minor collision can require replacement of these connectors.
Tech Tip: Always perform ADAS recalibration after replacing this connector to restore safety functions.
Y66A10 (10-Pin Connector) – Advanced ADAS Systems
The Y66A10 is another ADAS-heavy connector, supporting blind spot collision sensors and radar/sonar sensors in Honda, Lexus, Toyota, Mazda, Subaru, Mitsubishi, Genesis, and more.
Why it’s trending: Collision-prone placement and growing reliance on ADAS systems mean this connector is in high demand.
Tech Tip: As with the L72A8, always recalibrate ADAS systems after connector replacement.
Connectors may be small, but they’re at the heart of modern vehicle systems, from basic lighting and horns to complex ADAS sensors. The 10 connectors above represent the most commonly replaced parts in 2025, highlighting the shift toward repairing connectors instead of replacing entire harnesses.
This matters for collision repair shops and insurance partners. Stocking and sourcing the right connectors saves time, cost, and customer frustration while ensuring vehicles are repaired to manufacturer safety standards.
At FindPigtails.com, you can search by vehicle, keyword, or even upload a photo to find the exact connector you need. Every part we carry meets OE standards for durability, giving you confidence in every repair.