Hacked, Conversions and Trailering"Harley Sidecar, Conversion Trikes and Motorcycle Pull Behind Trailering Enthusiasts"
A forum for the discussion of your sidecar, Conversion Trike or Pull Behind Motorcycle Trailer.
I'm not sure if you're referring to a trailer you pull with your bike, or a trailer you put your bike on. But, I switched all my trailer (behind car) lights to LED with no problem. I'm guessing that the other lights on the same circuit provided the resistance needed to operate properly.