Nilight 5 Gang LED Light Bar Wiring Harness Kit - Heavy Duty Relay

Our review of the Nilight 5 gang wiring harness finds it best suited for DIYers who need a simple, reliable way to control multiple 12V lights from one panel. The single biggest reason to buy is the heavy-duty construction: a mix of 16AWG, 14AWG and 12AWG stranded wires plus a power relay and inline blade fuse give this harness the capacity to handle high-draw setups up to the stated load, while keeping each circuit separate with its own switch. Installation is straightforward for anyone comfortable with basic vehicle wiring and spade connectors.

Key Features

• Heavy-duty harness: The combined 16AWG, 14AWG and 12AWG stranded wires let the kit support larger loads and reduce voltage drop on long runs.
• Individual circuit control: Each rocker switch controls a separate circuit so multiple lights or accessories can be switched independently.
• Relay protection: A power relay routes high current through a protected path so the switch panel handles only low control current, improving longevity.
• Inline blade fuse: The harness includes an inline blade fuse as the first line of defense against overcurrent and short circuits for added safety.
• 5 gang rocker panel: The panel has blue indicator lights and durable switches rated for repeated use, plus DIY labels so functions are clear.
• 10 leads available: With two leads per switch the harness supports up to 10 separate outputs for lights or accessories.

Who It's For

This wiring harness is aimed at automotive and marine hobbyists who want a compact, organized way to control multiple 12V lights or accessories on cars, trucks, ATVs, UTVs, RVs and boats. It suits projects such as running multiple flood lights, auxiliary driving lights, interior or cargo lighting, or a mix of accessories where separate switching is desired.

Those who should look elsewhere include installers needing a plug-and-play factory-style loom for a specific vehicle without any splicing, or anyone working from a 24V system unless they plan to replace the relay with a 24V unit. Professionals wanting fully weathersealed, vehicle-specific connectors may prefer a different harness.

Pros & Cons

Pros

• Well-constructed wiring with 16AWG/14AWG/12AWG strands provides strong current capacity and flexibility.
• Individual switches let you control multiple circuits independently for versatile setups.
• Relay plus inline blade fuse adds meaningful protection against shorts and overcurrent.
• Clear indicator lights and customizable labels improve usability during night use.

Cons

• Wire length receives mixed feedback, so long-run installations may require additional wire or extensions.
• Some buyers report occasional component failures, so careful inspection during installation is advised.

Specifications

Brand	Nilight
Wire gauges	16AWG, 14AWG, 12AWG stranded
Voltage	12V system
Switches	5 gang rocker panel with blue indicator lights
Leads	10 output leads (2 per switch)
Protection	Power relay and inline blade fuse
Package includes	Wiring harness kit, blade fuses and spade connectors

Our Verdict

The Nilight 5 gang wiring harness is a practical, value-oriented option for hobbyists and DIY installers who need to control multiple 12V lights or accessories from a single panel. Its heavy-duty wire mix, relay protection and fuse make it a reliable choice for higher-draw setups, though installers should confirm wire length for their layout and inspect components during fitment. Overall it delivers strong utility for the price.

Frequently Asked Questions

Can this harness be used on a 24V system?
Not as supplied; the harness is built for 12V and you would need to replace the relay with a 24V relay to use it safely on 24V.

How many lights can I connect?
Each switch provides two leads so the kit supports up to 10 outputs in total, allowing separate control of up to 10 lights or accessories.

Does the kit include fuses and connectors?
Yes, the package includes blade fuses and spade connectors to complete a basic installation.