I have a 86 camaro I'm replacing the passenger side rear turn signal socket I bought one from the auto parts it has 3 wires coming off of it.A black wire, a brown wire, and a white wire.My taillight has two wires a black wire and a green wire.Black to black my green to the new sockets brown or white wire?There is no third wire coming off my socket on the drivers side or passenger side turn signal socket the socket has the two outside wires but the middle is sealed like there was never a wire there.Should I omit one wire on the new one?My thinking is that socket is used for more than one car or the same socket as the brake light which has 3 wires.Need help thanks

 

You have the wrong socket (of course) as you assume in the last sentence.
A bulb used only for one purpose (turn only) has a single filament and a single contact point on the bottom. The socket has of course also a single contact point in the bottom, and only two wires.
A bulb used for dual purposes (park/brake-turn) has two filaments and hence two contact points. It follows that the socket also has two points and three wires. The black would presumably be the common (ground) wire.
A factory producing sockets would use the same tools for molding either version, in order to make production simpler and cut costs.
You have two choices:
A: Exchange the socket you got with the correct two-wire one-point type.
B: Use the one you got, wire it like you suggest (finding the hi-power filament connection), and get a dual-filament bulb. It follows that the next person trying to exhange that bulb will be confused..

 

Thanks for the feedback,which wire black to black but my green to aftermarket white or brown on the new socket?if I exchange the socket for the O'Rielys double wire socket' my 2507 bulb won't fit.I think Iwill go with the 3 wire but my green to the new ones white or brown thats the big question.

 

Black is the ground, the other 2 are the different filaments. I don't recall witch one is the brighter of the two, but it'll be pretty obvious once hooked up. One is brighter than the other. They are used for red tail lights that get brighter for braking.

That's what we have to do for the full STS mod on the outer 2 sockets....put those 3-wire sockets in.