A basic traffic signal set up in West Covina. M400s are 250 HPS, also "bubble-butt" signal head. Oh yea, an old abandoned Thunderbolt siren, but thats not a light.
Whoa!..check out that Grand Federal Signal Thunderbolt!....looks like a 1000 or 1000T Model...im guessing since its abandoned,its not active...its a 1000 if its Single Tone,1000T if its Dual Tone...that could only be determined by hearing the siren since there's no diffrence visable externally.
Utility Hobby Yahoo Group is a GREAT place to post and talk about those kinds of things!!! I think a few was even posted...not sure....but that page is for a lot more general things that MOST of you members are actually interested INCLUDING old computers!
Did I mention I am also an owner of that site?
Civil Defense Warning Sirens are also a hobby of mine.