Best Wax for light cooled stangs?

i use turtle wax ultra gloss, my cars black, but it works for every color car, it has a great shine to it.

Yellow, You have a whole world of choices. Polymers, Carnuaba.
For the polymers I would recommend Klasse or Wolfgang.
You could always "Top it off" with Carnuaba. (Thats what I do)
The carnuaba doesn't last as long as polymers but they usually shine and give it that "wet look".
For Carnuaba I would recommend P21S, Mequiars #16, Sovereign, Pinnacle, or One Grand.
Here is a place you can get this stuff from.
Autopia
Here is a link to choosing a good wax.
Waxing

Any questions please ask. PM Me or just reply and I will try to help.
Good luck
Jon