Headlight Wiring

Step 1 of 4
"Your engine is running fine, but you're invisible at night. What's wrong?"

The Headlight System

The headlight system includes the switch, battery, relay (in some bikes), and bulbs. A simple break in the wiring or a corroded connector can stop it from working.

Even with a fully charged battery and working bulb, a single loose connection can leave you in the dark. Vibration from riding can loosen connections over time.

Headlight Wiring Diagram

🎙️ Listen to Explanation

In this lesson, you'll learn:

  • How the headlight circuit works
  • Common causes of headlight failure
  • How to diagnose wiring issues
  • The importance of secure connections

🧩 Headlight Circuit Simulation

Toggle the headlight switch and simulate a wire break to see how it affects the headlight.

Battery
Switch
Wire
Headlight
Switch:OFF
Wire Condition:CONNECTED
Headlight:NOT WORKING

Headlight is off because the switch is turned off.

A headlight circuit is a series circuit - if any component fails, the headlight won't work. Always check connections first when troubleshooting.

❓ Quiz

What could make a working headlight suddenly stop?