What size is the "T" shaped LED bulb for the circular halo in the headlight.

 

No factory lights have halos

 

Like slowbalt said, not a factory option. You'll have to remove the headlight assembly to figure out what brand housing it is/bulb size, as there are A TON of different aftermarket setups that had halos, and they're probably not all the same.

 

Well would you happen to know what I could use in place of this then?

 

I rarely see those fail. Are you sure it isn't the step down converter (little black box) that goes to it?
If it is the LED's I just re-solder Bright White LED's back on it. I actually have some of those LED's laying around and the converters.

 

So suggestions for making them green would be get some green leads and solder in place of white?

 

Absolutely... Any color you want. The step down converter doesn't care what color you use.
The original LED's are not even high intensity. You could get creative and put some bad ass LED's in there. There's plenty of room.

 

Suggestions for where to get them? Also is there another type of bulb that would fit or even run on 12v so maybe I wouldn't have to solder?

 

Google 194 side emitting or side wedge LED bulbs. I found quite a few side emitting that you could just resolder the wires to and if they are rated at 12v you won't need the black box.

Just a side note: Those that use the 2 LED's are really dim. You could put new angle eye LED rings behind the lens.

 

Awesome thanks for all the help I'll give these a try