Universal Bike-Side Wiring Harness for 5-Wire Trailer

A relay-isolation harness is a good investment if you're planning to pull a trailer. This setup allows you to drive a set of trailer lights (standard bulbs or LEDs) without affecting or loading the bike's signal circuits. In the event that a short develops in the trailer wiring (typically in the plug area), an inline fuse in the relay package protects both the bike and trailer. Your bike's lights will remain unaffected and continue to work. Simple plug-n-play installation makes it a snap to install.

Check out our installation video:

This package allows you to add a five-wire trailer to any bike. A five-wire trailer has separate brake and turn signals. The package includes a universal subharness for your bike, and relay package.

Due to the variety of plugs used by different manufacturers, bike-side plugs are sold separately. If you are buying a new trailer, your bike-side plug is usually included. If not, you'll find them here.

INTERNATIONAL ORDERS: We DO ship to locations outside the U.S. Please contact us for more information and shipping quotes. For the most accurate quote, please provide your complete address.