For side lights for the trailer, I can suggest these: http://www.jbimporters.com/web/check...t_number=95589 Your bike shop can order these from J&B, or you can get them on Amazon.com.



They flash amber, use 2 AAAs so you can use rechargables, they're fairly cheap, and they can clip onto fabric. If you have a kid in the trailer, I'd grab four and put them at the front and rear corners, facing sideways.

Another great active side light: the Cateye Orbit or NiteIze Spoklit spoke lights for the trailer's wheels. They're cheap, durable, and have wheel motion that gives the viewer the right idea about what the heck they're seeing.

If the trailer is made of fabric, you can get iron-on reflective tape and go wild with it. Two-inch-wide stripes all over. BUT remember it won't help if people don't have their lights turned on yet, or forgot to. You see that all the time, so active lighting is a must.

Oh, and for the bike and you: a reflective vest is a great add-on, Harbor Freight Tools has them starting at $5. Reflective legbands move and attract the eye, another great add-on; REI has the nice Jog-A-Lite ones or the LED-illuminated Planet Bike ones: http://www.rei.com/search?query=reflective+legband

For lights, I have a new favorite taillight, the Cygolite Hotshot. More info on that here: http://www.bikeforums.net/showthread...able-taillight

For headlights, adding a helmet light helps because you can steer it, and it shows over the tops of parked cars (smaller ones, anyway). You could rubber-band a 2AA high-output flashlight to your helmet and use rechargable NiMH AAs: http://www.shiningbeam.com/servlet/t...CREE-R5/Detail If you have a fancy NiMH charger that charges single cells, not just pairs, you could go with a 1AA model too.