Re: looking for emergency lighting
An interesting post, I do cycle race Commissaire work and other stuff and have put 'emergency' lighting on my bike for visual. You are allowed Amber or white on the front, and only Amber on the rear (though I do have reds). You don't need approval but must have a reason to use them (eg to warn etc).
To get approval for red and blue, is quite simple here in WA as well. But again, can only be used for official work. I haven't formally applied yet.
Police here, I know, keep them, themselves and destroy the lights when they are worn out (I know, I tried to get some!) but you can buy them from electrical distributors. They're in Arlec, Tridon catalogues etc. as are the poles.
It's the flashing units that are difficult to get. I have bought a unit off eBay and modified it for my setup. Much cheaper buying the electronics than trying to make them. Maybe the same electrical distributors have them?
It shouldn't be hard, and you may find the flasher units etc still in some ex-police motorcycles. I have seen one that was sold with everything except for the lights themselves.
I'll be following the thread!