Woo hoo! you made a haul! I've been trying to get my mitts on one of those. I ended up getting a cheap jc whitney job. Yours could be a federal signal. Its been so long since I hit the auctions that I'm not sure. Also, make sure it isn't a six volt unit B4 connecting to a 12 v battery.

I've no way of knowing /how/ to check if it's 6 volt. I dug around on ebay a little bit and saw others like this; same motor different siren that said it's 12 volt. The motor spun up on a little 12v battery I have, but I didn't actually try it until after I took the chopper off. I got some of the buildup off from the inside out outside of the outer core with some steel wool, and the rotor too. Sadly I don't think I'll be able to really clean the inside of the front half, as the guts are riveted in place, and I don't have a rivet gun or rivets. Pop rivets would be the wrong kind anyways.

hmm. problems indeed. Wish I could advise. I think the voltage should be ok at 12. if not it would have probably violently torqued in your hand or made some other kind of "thats way too much juice" noise. Good luck with it though!