My sidecar came with a headlight. It is not a Cozy, but the same rocket style, made in India. By the way, it also came with a brake. The headlight came with an H3 55watt halogen bulb. This, along with the 10watt rear marker light proved to draw too much current for the bike's charging system. The ammeter gauge would indicate the battery was draining even at highway rpms. I subsequently have put to use the unused headlight switch. I wired it so that the sidecar lights can be turned off for starting, idling, etc. I also have changed the bike's and sidecar's rear lights to LEDs. I am also going to install a 35watt H3 in the sidecar headlight. Hopefully, this will be adequate. If not, I will try to rig white LEDs in the headlight and just use it more as a marker. Anyway, my point is that a 55watt bulb is too much. This charging system doesn't have much reserve. I would recommend going with something that will draw less current.