Kuryakyn Trailer Wiring Harness 4-Wire

Safely and effectively apply the load from your trailer lighting to the battery and not to the rest of the bike's electrical system.

• Eliminates overloading stock lighting or accessory circuits
• Plus, a bonus wire can be connected as needed to provide fused 12 V power to the trailer for compartment lights, or keyless entry systems that are wired independently of the trailer's essential lighting
• Relay harness utilizes the inputs from the motorcycle to direct power from the battery to the appropriate trailer lighting circuit
• Wire Plus 1 or 4-wire Plus 1 kits provide standard 5-wire output (run, brake, left turn, right turn, ground), or standard 4-wire output (run, left turn/brake, right turn/brake, ground).

Note for Australian & European Markets

This product is designed and tested for the US Domestic Market to comply with relevant US standards. Consequently, it may have features that are not compatible or compliant with regulations outside the US. As such, this item is offered for off-road use. If this item includes a tow-ball, it is important that you ensure compatibility with your trailer. 

Note regarding tow-ball sizing: Please verify your trailer coupling size. Unless otherwise stated, if a ball is included with this product, it may be supplied with an imperial sized ball. It is important that you ensure compatibility with your trailer. U.S. market hitches typically are supplied in 2", 1-7/8" or 2-5/16.

IMPORTANT! DO NOT ATTEMPT TO COUPLE A TRAILER WITH AN INCORRECTLY SIZED TOW-BALL. Before installation, please check sizing as you may need to source an alternative ball for your application. Returns are not available for special order items.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Reference Information

Trailer Wiring and Relay Harnesses, Plug and Play Trailer Wiring for '14-'20 Trike with 4-Wire Trailer, Kit

Kuryakyn trailer wiring and relay harnesses safely and effectively apply the load from your trailer lighting to the battery—and not to the rest of the bike's electrical system. Wire Plus 1 or 4-wire Plus 1 kits provide standard 5-wire output (run, brake, left turn, right turn, ground), or standard 4-wire output (run, left turn/brake, right turn/brake, ground). Plus, a bonus wire can be connected as needed to provide fused 12 V power to the trailer for compartment lights, or keyless entry systems that are wired independently of the trailer's essential lighting. 4-Wire kits include a flat-4 connector. The 5-wire kits do not include receptacle kits because the style of receptacle required varies by trailer manufacturer.

Features:
• Eliminates overloading stock lighting or accessory circuits
• Relay harness utilizes the inputs from the motorcycle to direct power from the battery to the appropriate trailer lighting circuit