Nilight Fog Light Wiring Harness Kit — 16AWG 12V 5‑Pin, Illuminated Rocker Switch & Relay, Supports Dual 180W

Nilight's 16AWG Heavy Duty Wiring Harness Kit is a complete 12V fog-light wiring solution with a 5‑pin illuminated rocker switch, relay, blade fuse protection, and connectors compatible with 9005/9006/9140/9145/HB3/H10 style bulbs.

This harness gathers the wiring, relay, switch and fuses you need to add or replace fog lights on cars, trucks, ATVs and SUVs. Built with 16AWG wiring and a power relay, it supports dual fixtures up to a combined 180W on a 12V system and includes extra blade fuses and a clear wiring diagram to simplify installation.

What bulbs and vehicles will this harness work with?

The kit is made for common fog-light sockets and accepts 9005, 9006, 9012, 9140, 9145, 9150, 9155, HB3 and H10 style fog bulbs. It specifically does not fit H11 sockets, so verify your bulb type before purchasing. The harness is intended for 12V systems; if your vehicle runs 24V you will need a matching 24V relay.

• Compatible sockets: 9005/9006/9012/9140/9145/9150/9155/HB3/H10
• Incompatible: H11 bulb connectors
• Voltage: Designed for 12V; replace relay for 24V systems
• Maximum combined load: 180W for both outputs

How does the wiring harness protect the electrical system?

Protection is handled with a power relay plus blade fuses to guard against over-current and short circuits. The included fuse holder accepts a blade fuse and the package ships with two spare fuses. Using the relay also keeps heavy current off the switch, improving longevity and safety of the control circuit.

• Power relay manages high loads safely
• Blade fuse cuts power on overload or short
• Includes two extra blade fuses in the kit
• 16AWG wiring for reliable current handling up to rated load

What features does the switch and wiring layout offer?

The kit includes a 5‑pin SPST rocker switch with integrated LEDs so the switch is visible in low light. Two output leads let you feed dual fog lamps independently from a single harness, and the 7.2‑foot wiring makes routing flexible for most installations. Wiring comes with a clear diagram to speed up hookup and reduce guesswork.

• 5‑pin SPST illuminated rocker switch for easy on/off control
• Two light-output connectors for dual fixtures
• 7.2 ft extendable harness for flexible routing
• Included wiring diagram for straightforward installation

Can I install this myself and what’s included?

Yes — the harness is intended for DIY installation by anyone comfortable with basic vehicle electrical work. The package contains the wiring harness assembly, the illuminated rocker switch wired into the harness, a relay and blade fuse holder with spare fuses, plus a wiring diagram to guide connections. If you’re unsure about vehicle grounds or fuse placement, consult a qualified technician.

• Package: harness, switch, relay, fuse holder, extra fuses, diagram
• Designed for DIY installs with common hand tools
• Check vehicle manual for grounding and fuse box access
• For 24V systems, swap to a 24V relay (not included)

Who is this for: This Nilight harness suits drivers who want a ready-made, durable wiring solution for aftermarket or replacement fog lights on 12V vehicles—especially DIY mechanics, off-road enthusiasts and fleet owners seeking reliable relay protection and an illuminated switch for nighttime operation. If you need H11 compatibility or operate a 24V electrical system, choose a harness specifically matched to those requirements instead.