I haven't read this whole thread, so please berate me if this has been exhausted already.

I'm looking for an inexpensive headlight and (preferably blinking) tailight to wire to the
24 volt battery on my electric bike. This is a 7 amp hour NiCad pack.

I figure the draw for the lights would be pretty small relative to the draw of the motor, and I'd prefer
not to need to fiddle with separate AAA batteries for the lights, like I do now.

If I just got a cheap "driving light" as are sold for adding on to cars (obviously designed for 12v system)
and tail light, maybe designed for a trailer (would be 12v system and non blinking), would these burn
out instantly or burst into flames? Is there a better way to do this?