1973 VW Beetle Headlight Switch Wiring Diagram – A Comprehensive Guide

Are you tired of trying to figure out the wiring for the headlight switch on your 1973 VW Beetle? Look no further! In this article, we’ll provide you with a complete guide to understanding and implementing the headlight switch wiring diagram for your classic vehicle.

What You Need to Know About the 1973 VW Beetle Headlight Switch Wiring Diagram

The headlight switch wiring diagram for the 1973 VW Beetle can be somewhat complicated if you’re new to working on classic cars. However, with a little bit of patience and some basic knowledge of wiring, you can easily decipher the diagram and get your headlights working properly.

Before diving into the wiring diagram itself, it’s important to understand a few key terms and components:

  • Ground: A grounding wire runs from the negative battery terminal to the chassis of the car. This allows electricity to flow through the vehicle.
  • Power: Power comes from the battery and is routed through various wires to different components of the car, including the headlight switch.
  • Relay: A relay is an electrical switch that is activated by a small electrical signal. In the case of the headlight switch, the relay is used to control when the headlights turn on and off.
  • Fuse: A fuse is a protective device that prevents electrical overload from damaging components of the vehicle. It’s important to ensure that the appropriate fuse is installed for each component.

Understanding these terms will help you to understand the wiring diagram and how the headlight switch works.

Headlight Switch Wiring Diagram

The following diagram shows the wiring for the 1973 VW Beetle headlight switch:

Color Function
Red Battery Positive (+)
Brown Parking Lights
Green/Red High Beam
Blue/Red Low Beam
Yellow/Black Headlight Switch to Dimmer Switch
Black Ground (-)

As you can see from the diagram, the headlight switch has six wires connected to it:

  • Red: This wire carries battery positive (+) and provides power to the headlight switch.
  • Brown: This wire connects to the parking lights and provides power to them when the headlight switch is turned on.
  • Green/Red: This wire provides power to the high beams when the headlight switch is turned on.
  • Blue/Red: This wire provides power to the low beams when the headlight switch is turned on.
  • Yellow/Black: This wire connects the headlight switch to the dimmer switch, allowing control of the high and low beams.
  • Black: This wire provides the grounding (-) necessary for the headlight switch to function.

By understanding this diagram and the operation of the headlight switch, you can easily diagnose and fix any wiring issues that may be preventing your headlights from working properly.

Frequently Asked Questions

Why Are My Headlights Not Working?

If your headlights are not working, there could be a number of reasons why. Start by checking the fuses to ensure they are intact and the appropriate rating. If the fuses are good, check the wiring to ensure that there are no breaks or shorts. Finally, check the headlight switch itself to ensure that it is functioning properly.

How Do I Replace the Headlight Switch?

To replace the headlight switch, you will need to remove the dashboard cover and disconnect the wiring harness. Remove the retaining screws and gently pull the switch out. Replace it with a new switch and reattach the wiring harness and dashboard cover.

How Can I Tell If My Headlight Switch Is Malfunctioning?

If you’re experiencing issues with your headlights, there are a few telltale signs that your headlight switch may be malfunctioning. These include headlights that flicker or fail to turn on, or difficulty in changing between high and low beams. If you suspect that your headlight switch is malfunctioning, it’s important to have it checked and replaced if necessary to ensure proper function of your vehicle’s lighting system.

Can I Repair the Headlight Switch Wiring Myself?

While it is possible to repair headlight switch wiring yourself, it’s important to have a basic understanding of wiring and electrical systems. If you are not comfortable working with electrical systems, it’s best to consult a professional mechanic to ensure the safety of yourself and your vehicle.

What Other Issues Can Affect My Vehicle’s Lighting System?

Other issues that can affect your vehicle’s lighting system include faulty bulbs, damaged wiring, or malfunctioning relays. Regular maintenance and inspection of your vehicle’s lighting system can help to identify and resolve these issues before they become major problems.


Understanding the wiring for the 1973 VW Beetle headlight switch can be daunting, but with a little bit of knowledge and patience, it’s possible to diagnose and repair any issues that may arise. By following this guide and utilizing the wiring diagram, you can get your vehicle’s lighting system functioning properly and safely for all of your nighttime driving needs.