Wayout440 is correct, it is a 24vac motor and lamps.
I have all the parts to put another beacon mechanism together but am short the pulleys at the moment, just need to order some. Price is $215 plus shipping. It is plug and play as long as you have the factory 3 pin molex connector on your harness. Does not come with the 3 dome lenses but Marco has the White and Blue, I might let go of my spare red dome.
http://www.marcospecialties.com/pinball-parts/03-7981-10 Blue
http://www.marcospecialties.com/pinball-parts/03-7981-5 White
http://www.marcospecialties.com/pinball-parts/03-7981 Red is currently out of stock