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12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch
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12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch

Regular price $48.99 Sale price $40.99 – $65.99

Why customers love it

Heavy-Duty Wiring Harness for Reliable 12V Lighting

This 12V heavy-duty wiring harness kit simplifies fog light and auxiliary light installation with a reliable relay and illuminated rocker switch for safe, convenient control.

  • 16 AWG wire rated for 12V systems with 15A max current and 180W max load
  • 5-pin rocker switch with illuminated indicator for easy visibility
  • Automotive relay with high-conductivity pins protects your lighting circuit
  • Inline blade fuse holder with 3 spare fuses guards against over-current and short circuits
  • Plug-and-play connectors compatible with 9005, 9006, 9012, 9140, 9145, 9150, 9155, HB3, and H10 bulbs
12V Heavy Duty Fog Light Wiring Harness Kit with Relay and Rocker Switch

Why You'll Love This Harness

High-Current Capacity

The 16 AWG wire is rated for 12V systems with a 15A max current and 180W max load, supporting demanding lighting setups.

Complete Circuit Protection

An automotive relay with high-conductivity pins and an inline blade fuse holder with 3 spare fuses guard against over-current and short circuits.

Easy Visibility and Control

The 5-pin rocker switch features an illuminated indicator, making it simple to see and operate your lights in any condition.

Plug-and-Play Compatibility

Connectors work with 9005, 9006, 9012, 9140, 9145, 9150, 9155, HB3, and H10 bulbs for straightforward installation.

Specs

The details that matter

Built to last outdoors, season after season.

Wire Gauge
16 AWG
Voltage
12V
Max Current
15A
Max Load
180W
Switch Type
5-pin rocker switch

Comparison

Why Choose This Harness

Not all products in this category are built the same.

Feature
SmartPicksWorld
Typical alternative
Wire Gauge
16 AWG for higher current capacity
Standard thinner wire
Circuit Protection
Includes relay and fuse for protection
Basic harness without protection
Bulb Compatibility
9005, 9006, 9012, 9140, 9145, 9150, 9155, HB3, H10
Limited bulb types

Our worry-free shopping promise

If your order arrives damaged, defective, or not as described, contact us within 14 days and we will make it right with a replacement or refund.

Frequently asked questions

Everything you might want to know before you order.

Which bulbs are compatible with this wiring harness?

This harness is compatible with 9005, 9006, 9012, 9140, 9145, 9150, 9155, HB3, and H10 bulbs.

What is the maximum current and load this harness can handle?

The harness is rated for 12V systems with a 15A max current and 180W max load.

What components are included for circuit protection?

It includes an automotive relay with high-conductivity pins and an inline blade fuse holder with 3 spare fuses to guard against over-current and short circuits.

How long is the rocker switch rated to last?

The switch is rated for 10,000 presses, ensuring reliable operation over time.

What makes this harness durable for long-term use?

It features durable PVC-coated wires and a water-resistant fuse cap for long-lasting performance.

Shipping & returns

Shipping

  • Delivers to United States (based on your selected country/region).
  • Estimated delivery: 3–15 business days after dispatch.
  • Shipping cost: Free.

Returns

You can request a return within 14 days after delivery. Standard returns have a €4.00 EUR (approximately $4.66 USD) flat-rate return shipping fee, deducted from your refund. Return shipping is free for items that arrived damaged, defective, or incorrect. Items should be unused and in original packaging where possible. Contact us before sending anything back.