I went to radio shack for a conversion and the guy doesn't even know what plug in this is. Its for my new cfl light I bought from plantlightinghydroponics.com. The website say nothing about a weird plug in.
Are you sure there isn't something else in the box? I would contact plantlightinghydroponics.com and see what they have to say. Always best to go back to the source. Good luck.
They shipped me the wrong thing. I called them and they verified that my order and what was shipped to me was wrong. It is the cord to go to a ballast.
If u are lookin for the adapter from the ballast to the reflector i had the same problem.... here is the adapter to connect them both i hope that helps lemme know =] Hydrofarm - Hydrofarm BAASR Receptacle Adapter Brand S