Wiring Fog Lamps

Step 3 of 4
"You added fog lights — and now your fuse keeps blowing. Let's fix that."

High-Current Accessories

Fog lamps draw high current. You must wire them using a relay and dedicated fuse, taking power directly from the battery.

Powerful fog lamps can draw 5-10 amps or more. Most stock switches and wiring aren't designed to handle this load directly, which is why a relay is essential.

Fog Lamp Wiring Diagram

🎙️ Listen to Explanation

In this lesson, you'll learn:

  • How to properly wire high-current accessories
  • The importance of relays for fog lamps
  • How to select the right wire gauge and fuse rating
  • Common mistakes when installing auxiliary lighting

🧩 Fog Lamp Circuit Simulation

Toggle the relay and switch to see how they affect the fog lamp circuit.

Battery
Fuse
Switch
Relay
Fog Lamp
Relay:INSTALLED
Switch:OFF
Circuit Status:INACTIVE

Circuit is off. Toggle the switch to power the fog lamp.

Fog lamps typically draw 5-10 amps or more. A relay allows a small current through the switch to control a much larger current to the lamps, protecting your bike's electrical system.

❓ Quiz

What happens if fog lights are connected without a relay?