OK, the kind of bike lights they have at a bike store are pretty much inadequate for a zooming e-bike. Although they let drivers see where you are, they don't really illuminate the road.
Tail lights and marker lights are pretty easy - a bike store tail-light is adequate for this purpose. I've hacked flashing LEDs and built them into my helmet - nice and bright, way up high, easily seen. ( Lemme know if anyone wants a schematic and likes PICs.) My new trike project will probably have some such thing made out of high-brightness red LEDs, facing rear and to the side. Should be able to make the bike as visible as an ambulance with it's siren going, from the rear.
What have people done about headlights?
I was playing recently with some high brightness white LEDs. I arranged 21 of them into a small aluminum project box, and set them up to run on 36 volts, so it could be plugged directly into my batteries. Pretty bright, very efficient, not very focused. I am afraid it probably doesn't punch far enough ahead, being unfocused.
You can get standard incandescent lights from Ebikes.CA. I'd like to have something more efficient (LED source) but also have some punch to stab out into the darkness when I am hurtling along. What have other people done for headlights?