Professional Electrical Help Please!

I have recently purchased a 5x5 sj dark room and i am wiring my 600w mh, my problem is i have a SilverStar 6" air cooled light fixture with negative and positive conectors in the bulb socket, but no ground. The cord running from my 600w ballast has negative, positive and ground. Do i conected the ground wire to the fixture itself? or what do i do with my ground so i dont burn the appartment down! Thanks for your time!

Stay High :joint:
 
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