A quick video of my new N Gauge belisha beacons on the zebra crossing. Not too difficult to make, although everything N Gauge is pretty fiddly.
I used two tiny flashing amber smd LEDs, 1.6mm heatshrink both from layouts4u.net. The globes are 4mm clear glass beads painted matt yellow.
First I removed the resistors from the 2 smd LEDs as I wanted to use a 3 volt cell battery (No 2032) in a holder as they seem to work best for LEDs. Above 3v you need the resistors to prevent damaging them. I then arranged the tiny light on its wires, so that it pointed vertically up. The glass beads I bought had a hole through the middle for threading. This provides a small dip to fit partially over the smd. I then glued the glass bead carefully in place on top. I use super glue gel which works a treat on most things n gauge as only a tiny drop is needed. Also a tiny blob on the top of the bead covered the top hole.
Next I used some heatshrink around the tiny wires as a pole. You could then paint small white hoops around the pole but I printed out a small sheet of black and white stripes, which I glued around the poles with paper glue. Finally I painted the globes with matt yellow enamel. Once dried it was just a question of drilling two holes and adding them to my zebra crossing.