Zymol "Carbon" wax for black, I used it on my Audi A4.
http://www.zdoau.com/products/produc...php?pid=37&p=1
Will make the black look darker

...best of all no dried white crap that you get with the cheap products.
Once you have used Zymol everything else gets thrown in the rubbish bin.
__________________
Cheers Andy
From Down under
2004 4.4i Sport Alpine White
2008 Toyota Land Cruiser Turbo Diesel (on order)
1993 Daihatsu Feroza SXP II