Modified some lights for my bike using some "super bright" 3V 20mA blue LEDs.

Added four LEDs to the headlight. You can see two of them in the pic:

Should get about 100 hours from the C cells in the headlight. Added a single pole 3-way switch: Off, LED, or incandescent.

With tire touching a piece of cardboard, incandescent mode:

You can see the beam is focused.

Blue LED mode:

Bright but diffuse.

Tail light: added SPST switch & a little perfboard with one LED and 2 N cells. Thats all thatll fit. Expecting 50 hours from the N cells.

Light is on, mounted with a rubber insulated conduit hanger & a shiny mending plate that I twisted in a vise.


Brightness compared to the seatpost LED flasher. The Woho bag is transparent & reflectorized, and the blue reflector is a Stimsonite highway reflector, very bright.

Night pic: fast flasher in the Woho, slow flasher on the seat post, steady blue LED:


My thinking here is that distracted drivers are a hazzard, but, what if I'm the distraction? And what's more distracting when you're driving than flashing red and blue lights?