Standard Ignition LWH105 Daytime Running Light Wiring Harness

Daytime Running Light Wiring Harness for H7 Bulbs

Standard Ignition LWH105 is a daytime running light wiring harness for vehicles equipped with H7 bulbs and an 8 1/4-inch harness. It supports a wide range of import and domestic applications, including Audi A4, BMW 3 Series, Mercedes-Benz C-Class, and Volkswagen Jetta models.

Key Features

• Daytime running light wiring harness for H7 bulb applications
• 8 1/4-inch harness length noted in fitment data
• Direct fit coverage across many Audi, BMW, Mercedes-Benz, Volkswagen, Volvo, Hyundai, Kia, and more
• Standard Ignition LWH105 part number for catalog matching
• Fits vehicles listed with H7 bulb lighting configurations

Detailed Description

Use Standard Ignition LWH105 when replacing a damaged or failing daytime running light harness on vehicles that use H7 bulbs. This harness is listed for a broad range of fitments from 2001 through 2014, including Audi A4, BMW 328i, Mercedes-Benz E350, Porsche Cayenne, and Volkswagen Golf applications. The fitment data also identifies vehicles that require the 8 1/4-inch harness configuration, making it important to verify bulb type and harness length before ordering. Standard Ignition LWH105 is a practical replacement for restoring proper DRL electrical connection on supported vehicles.

What It Helps Solve

• Intermittent daytime running light operation
• Damaged or heat-affected wiring at the headlamp area
• Loose electrical connection at the H7 bulb circuit
• Harness failure caused by age, vibration, or corrosion
• Lighting faults tied to a worn DRL wiring lead

Installation Notes and Tips

Confirm the vehicle uses H7 bulbs and matches the listed harness length before installation. Compare the original connector routing and harness layout to the replacement part number LWH105. On vehicles such as the Audi A4, BMW 528i, and Mercedes-Benz C300, verify the headlamp assembly and DRL circuit configuration against the catalog fitment. Inspect nearby connectors and bulb sockets for heat damage before installing the new harness.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical replacement parts. This part is cataloged for direct fit applications listed in the vehicle fitment data.