If you’re wiring basic motorcycle lighting or adding auxiliary LEDs, a bare bones wiring harness delivers reliable power and simple control. These kits are best for riders who want straightforward, budget-minded installations without extra frills. The top products below are chosen for compact builds, ease of use, and solid protection against shorts or moisture. They’re ideal for street bikes, dirt bikes, ATVs, and UTVs that run on 12V systems.
Buyer tip: look for a harness with a weatherproof switch, a robust relay, and a fuse as a first line of defense. For riders who need to power two lights or adapt to different mounting positions, consider a two-lead or multi-lead harness. The quick-reference table highlights each option’s focus, mount suitability, and wiring protection features.
- Best overall for compact, single-bar setups
- Best for two-light configurations with strong protection
- Best value for universal 12V use
- Best for off-road vehicles with nylon-wrapped wiring
- Best for Harley-style or Tour Pak upgrades
Nilight Wiring Harness Kit Nylon 16 AWG 1 Lead
Best for a simple, on/off LED setup on a single circuit. This kit uses 16 AWG stranded wire suitable for up to about 180W load, with a power relay and inline blade fuse that act as the first defense against overcurrent and short circuits. The handlebar switch is CNC aluminum and plastic, with a waterproof silicone sleeve for reliability in rain or dust. It fits most 7/8″ handlebars and includes a red-illuminated 3-pin rocker switch for quick visibility in dark cabins. Great for riders who want a clean, minimal install that’s easy to operate and maintain.
Who this is best for: riders who want a rugged, compact harness to power a single light or similar accessory without extra complexity. The kit’s protective elements suit daily riders in varied weather. Caution: limited to smaller loads; avoid overloading beyond the 180W rating.
OFFROADTOWN 2 Leads LED Light Bars Wiring Harness Kit
This universal harness is designed for a pair of LED devices and handles up to 120W. It uses 18AWG wire and a 40A power relay with a 10A blade fuse, offering solid circuit protection and a tight-fitting waterproof cap for water resistance. It’s a good choice when you want to run two lights on one circuit and need dependable weather sealing. The nylon jacket adds durability and heat resistance, suitable for motorcycles, ATVs, dirt bikes, and scooters with 7/8″ handlebars.
Who this is best for: riders planning two-light configurations, such as dual fogs or light bars, who value durable, weatherproof construction. Choose this if you want robust protection without extra features. Caution: the 18AWG wires limit the maximum load to around 120W, so plan lights accordingly.
DZG Motorcycle LED Light Wiring Harness Kit
This kit provides two light leads, a 40A relay, and a waterproof inline fuse for strong circuit protection. It’s designed to power two LED lights and is suitable for fog lights, driving lights, or auxiliary work lights. The assembly targets durability in wet and dusty riding environments. It’s a solid fit for riders who want a straightforward install with reliable switch control and protection against overcurrent or moisture-related issues.
Who this is best for: riders who want to add two lights with a robust, weatherproof harness. Caution: ensure the two lights together stay within the 120–180W range depending on the wire gauge you choose and the relay’s capacity.
Fastchoy Auto Wiring Harness Kit – 1 Lead
Designed to connect and operate up to 400W of lighting per lead, this nylon-wrapped harness supports up to 14.7 feet of wiring and includes a 3-pin rocker switch with red indicator light. It’s built for harsh environments and resistance to cracking or fraying, with moisture-resistant fuse housing and relay block. This option is suitable for riders who want a longer reach and a single high-load circuit for a single bar or larger light bar setup.
Who this is best for: riders needing longer wiring reach and a higher load tolerance on a single circuit. Caution: the 400W claim is peak; ensure your light bar total does not exceed circuit limits and that wiring gauge is appropriate for the load.
Svicari Tour Pack Power Tap Harness
Specialty harness for Harley-Davidson Tour Pak upgrades, designed as a quick disconnect power tap. It’s compatible with various Harley models through 2014–2022 model references and uses a robust construction to resist high temperatures and corrosion. It helps simplify wiring for trunk-area accessories, reducing the need for permanent splices. Best for riders who want a clean, removable power connection for touring gear and accessories.
Who this is best for: Harley riders or touring setups that require a detachable power source in the Tour Pak area. Caution: compatibility should be verified with your specific model year to avoid fit issues.
LENJIEMT 1 Lead LED Light Bar Wiring Harness
This universal kit fits 7/8″ handlebars and 12V systems, supporting up to 120W for a single light output. It includes a 40A relay and a 15A blade fuse with a waterproof cap for protection against moisture and dust. The three-lead design allows better control of a single light with high and low beam options, making it suitable for fog or work lights on motorcycles and ATVs.
Who this is best for: riders who want a straightforward, single-light harness with adjustable on/off control. Caution: it’s best for lighter loads; heavier bars or higher wattage lights may require a higher-capacity harness.
Buying Guide
What should I look for in a bare bones motorcycle wiring harness?
Key factors are wire gauge, protection features, and switch reliability. A heavier gauge (14–16 AWG) supports higher loads with less voltage drop. A built-in relay and inline fuse protect the circuit, while a weatherproof switch ensures durability in rain and dust. Nylon jackets add heat resistance and longevity in engine bays.
How many lights can a single harness safely power?
The load rating (watts) is the practical limit. Match the total wattage of connected lights to the harness’ rated capacity. For two lights, consider a harness with a higher current rating or dual leads. For one light, a 16 AWG kit is often sufficient.
Which harness is best for off-road use?
Look for nylon-wrapped wiring with a thick outer jacket and robust moisture sealing. A reliable relay and a waterproof fuse housing help prevent corrosion from mud and water exposure. Longer wiring runs are handy for ATV or UTV installations.
Do I need a specific handlebar size?
Most 7/8″ (22mm) handlebars are standard, but confirm the switch mounting diameter and clamp compatibility. If you ride a larger handlebar, verify the kit’s compatibility or opt for a model advertised as universal. A secure mount reduces switch wear and accidental activation.
What about Harley Tour Pak connections?
Tour Pak or accessory power harnesses are designed for trunk-area gear. Verify model compatibility with your year and bike model. Quick-disconnect designs simplify removal and maintenance while preserving a clean, factory-like appearance.
FAQ
- Q: Can these kits power two LED bars on a single circuit?
- A: Some kits meet two-light needs with a 40A relay and appropriate fuse; always check the total load against the circuit rating.
- Q: Are the switches weatherproof?
- A: Yes, most switches include a waterproof sleeve or cap to resist moisture and dust.
- Q: Is nylon wiring better than PVC?
- A: Nylon offers higher heat resistance, durability, and flexibility, which improves longevity in harsh conditions.
- Q: Do these harnesses include mounting hardware?
- A: Most kits include basic mounting hardware and wiring connectors; verify the package contents before purchase.
Comparison at a Glance
- Best overall: Nilight 16 AWG single lead for simple, compact builds.
- Best two-light protection: OFFROADTOWN 2 Leads with dual output and robust sealing.
- Best universal load: Fastchoy Auto 1 Lead for higher-load single-light setups.
- Best for touring gear: Svicari Tour Pack for Harley-Davidson Tour Pak installations.
- Best single-light flexibility: LENJIEMT 1 Lead with dual-beam capability for low/high setups.