HUIQIAODS H11 881 H9 Fog Light Wiring Harness Kit — 12V 40A Relay, 15A Fuse, LED Switch, 8.5ft Cable

HUIQIAODS H11 881 H9 Fog Light Wiring Harness Kit provides a complete 12V relay, fuse, switch and adapters to safely power aftermarket fog, LED or HID driving lights.

This plug-and-play wiring harness bundle supplies everything needed to add or replace fog lights: a 12V 40A four-pin relay, a 15A inline blade fuse, adapter-compatible wiring, and a 5-pin LED indicator on/off switch. The kit features more than 8.5 feet of cable from switch to lights, durable PVC insulation, and adapters for H11/881/H9-style sockets so you can wire auxiliary lights without modifying factory harnesses.

How does this harness protect my new fog or LED lights?

The harness uses a 12V 40A power relay and a 15A inline blade fuse to reduce risk from overcurrent and short circuits. Premium PVC insulation and quality terminals help resist abrasion and environmental exposure when routed through engine bays.

• 40A relay offloads switch current, preventing overheating.
• 15A fuse provides sacrificial protection for the lighting circuit.
• PVC-jacketed wiring resists oil, heat, and abrasion under the hood.
• Adapter ends avoid splicing into factory connectors, preserving OEM wiring.

Will this harness work with my H11, 881 or H9 fog bulbs?

Yes — the kit includes adapter plugs designed for H11/881/H9 sockets so common fog, halogen, HID, and LED replacement lamps are compatible. Adapters let you connect aftermarket lights directly while keeping factory receptacles intact.

• Includes multiple adapter plugs for common fog lamp types.
• Designed for aftermarket HID, LED, and halogen fog lights.
• Connects without cutting OEM harness in most installations.

How easy is installation and what tools do I need?

Installation is straightforward for DIYers familiar with basic vehicle wiring: route the harness, mount the relay and fuse, plug adapters into the light sockets, and fit the LED switch in the dash. Basic tools like wire cutters, screwdrivers, and a test light or multimeter are usually sufficient.

• Over 8.5 ft of cable to reach most mounting points without extensions.
• Plug-in adapters reduce the need for splicing and soldering.
• Includes switch with LED indicator to mount in 36mm x 22mm hole.

What’s included and what is not included in the package?

The kit ships with the wiring harness, a DC 12V 40A 4-pin relay, a 15A inline blade fuse, and a push-button switch with LED background indicator. Fog lights or bulbs are not included—this bundle provides the electrical interface and protection components only.

• 1 x fog light wire harness kit (lights not included).
• 1 x DC 12V 40A 4-pin relay and relay module box.
• 1 x push-button switch with LED indicator (36mm x 22mm size).
• 1 x 15A inline blade fuse and wiring with adapters.

Who is this for: This harness is aimed at vehicle owners, mechanics and DIY installers fitting aftermarket fog, driving or work lights who want a protected, plug-in wiring solution. It suits those upgrading to LED or HID lamps, adding auxiliary lights to trucks and SUVs, or replacing damaged fog-light wiring without cutting OEM connectors.