Headlamp wires VOLVO XC90 2004

OEM: 30678833 89035355

Disassembled car photo

Engine running

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What is this part and why does it matter?

This wiring connects the headlight bulbs to the vehicle’s lighting circuit, carrying power for low beam, high beam, and associated functions.

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Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

  • Headlight not working on one side
  • Intermittent headlight operation, especially over bumps
  • Visible corrosion or damage on the connector

Installation information

Routes from the lighting circuit to the headlight bulb holder — check for secure, correctly seated connectors after installation.

Frequently asked questions

A loose or corroded connector at the wiring-to-bulb connection can lose contact momentarily with vibration, causing the light to flicker or cut out intermittently.

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