What you need to know about the most popular wire harness connectors

We'll start with the top 5 auto connectors

The top 5 automotive connectors largely remain the same from year's past, except for one: B85C3

You can watch the video (to the left) by clicking on the play button or view it directly on our YouTube page by clicking below.

FindPigtails-Product-SKU-Z27C2-fsw

#1: fog lamp, headlight

Z27C2 (aka Y27C2) | 2-pin connector

This wire harness connector is known as "z27c2" or formerly known as "y27c2" and has been a top-selling and one of the most common automotive connectors for years.

It's easily damaged during an automotive collision whenever there is a front impact. One of the reasons for this is because of the location. This connector, commonly used for fog lamp and headlight fitments, sits exposed directly behind each lamp, behind the bumper.

The most common manufacturers this OEM connector is used for is:

  • Acura, Honda
  • Toyota, Lexus
  • Subaru
  • Mazda

#2: Fog Lamp, Headlight

L42B2 | 2-pin connector

Call them what you will; auto connectors, wiring harness connectors, plugs, pigtails, etc. but these specific automotive parts do have a lot of names or "aka" titles.

For some reason, this pigtail is commonly referred or requested to us as a "wiring harness kit" for a Nissan/Infiniti,  Buick or Dodge.

Common manufacturers include:

  • Dodge
  • Infiniti, Nissan
  • Chevy
  • Chrysler
  • Alfa Romeo
  • Buick
  • Jeep
FindPigtails-Product-SKU-L42B2-fsw
FindPigtails-Product-SKU-L43A2-fsw

#3: Fog Lamp

L43A2 | 2-pin connector

This wire harness connector is another fog lamp fitment (see the trend?). One key mention is that there are two options for this pigtail when it comes to Hyundai and Kia models, specifically for Genesis, Veloster, Cadenza, Forte and Spectra models.

Most common manufacturers include:

  • Hyundai
  • Kia

#4: Blind Spot, Front Radar/Sonar Sensor, Pedal Position Sensor

R62C8 | 8-pin connector

Quick fact: You can determine how many terminals or pins each pigtail has by our part number. For example, this connector is R62C8. The last digit in this part number is "8" so it has 8 terminals/pins.

So how many pins or terminals would part B41B6 have?

Yes, it would be a 6-pin connector.

But back to R62C8...

This is most commonly used as a blind spot connector but as you can see above in the title, it can also be used for radar sensor and pedal position sensor.

Not long ago blind spot sensor connectors were rarely seen. That's because this type of technology is fairly newer and more vehicles are now including blind spot sensors on their vehicles.

Common manufacturers include:

  • Buick
  • Chevy
  • Cadillac
  • Nissan, Infiniti
  • Dodge
  • GM electrical connectors
FindPigtails-Product-SKU-B85C3-fsw

#5: Front turn signal, Headlight, Headlamp

B85C3 | 3-pin connector

Rounding out the top 5 automotive plugs, pigtails and connectors for 2020 is this 3 pin connector, B85C3.

It is most commonly used for front turn signal, headlight high beam, headlight low beam and main headlamp fitments.

Most common manufacturers include:

  • Chevy
  • Ford connectors: Expedition, F350, F250, F150, Focus, Mustang, Crown Victoria
  • Mercury
  • Lincoln

 

The others

FindPigtails-Product-SKU-Y210B3-fsw

Y21B3: 3-pin connector

Front Turn Signal
Daytime Running Lamp

  • Honda
  • Acura
  • Lexus
  • Toyota
FindPigtails-Product-SKU-L64A2-fsw

L64A2: 2-pin connector

Ambient Temp
Daytime Running Lamp
Fog Lamp
Keyless Entry

  • GM connectors
  • Mercedes
FindPigtails-Product-SKU-D41A2-fsw

D41A2: 2-pin connector

Ambient Temp Sensor

  • Infiniti
  • Nissan
FindPigtails-Product-SKU-Y11A1-fsw

Y11A1: 1-pin connector

Horn Connector

  • Lexus
  • Subaru
  • Toyota
FindPigtails-Product-SKU-D81B3-fsw

D81B3: 3-pin connector

AC Compressor
Fog Lamp
Keyless Entry

  • Hyundai
  • Kia
FindPigtails-Product-SKU-B21B2-fsw

L43A2: 2-pin connector

Fog Lamp
Headlight

  • Ford
  • GM
FindPigtails-Product-SKU-Y31C3-fsw

Y31C3: 3-pin connector

Alternator

  • Hyundai
  • Kia
  • Mazda
  • Nissan
FindPigtails-Product-SKU-L72A8-fsw

L72A8: 8-pin connector

Front Radar/Sonar Sensor

  • Audi
  • Mercedes
  • Nissan

Eric Palazzolo

Eric Palazzolo is founder and president of FindPigtails.com, a Houston-based company dedicated to providing high-quality automotive connectors and top-shelf customer service to its clients in the collision repair industry.