I was thinking about getting some of these....

Like you said, having a blue bike I would try and mount them somewhere that they can't be seen, but I reckon it would probably look quite cool on a black one!

I would have soldered and heatshrinked all the wire joins. (I personally think it would well be worth your time practicing and practicing soldering wires and components until confident. I quite enjoy soldering now! lol)

I think your guide was very good, not vague and has lots of informatively annotated pictures

I alway plan to make guides for the mods I do (on other things too, not just bikes), I take the photos, but never get round to writing them up lol.

So yeah......good stuff!

Harry