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.
Check out our installation video:
This package allows you to add a four-wire trailer to your bike. A four-wire trailer has shared brake/turn signals. The package includes a universal subharness, a 5-to-4 converter, 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.
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