70w hps question

i was in a thrift store today and seen they had a 70w hps light. the thing is its like a street light thing i was wondering if i need a ballast to use that or if i can just hook wires up to it and plug it in.. its only 5 bucks and has a light and stuff i dont know if it works but i figure for 5 bucks i better try it .. but idk if i need a ballast or not.

youll need a ballast

even if it doesnt' have a big base it won't work in a regular lamp. 70hps isn't very much, it's almost pointless to get a bulb like that - esp if u need to buy a ballast for that thing. it would be a waste of $.