I've got a power source and a speaker. (I should have stated that) On the bottom of theirs a strip with two screws mark speaker, two marked radio and one mark 12+. I haven't been able to find where to put the ground wire.
I recently acquired a PA-5 siren and am try to see if it still works or not. Would anybody now how to wire it, also does anybody know where I might find a manual for it?