Foglight installation advice??!!!!Please help

I am going to install a pair of after market fog lights for my 2002 s500 (US version) on my Laser bumber body kit. Can any one guide me the right direction to get the positive(+) supply for these. I read some where that I can get the power from the 2 front fuse boxes under the hood but I afraid that I may cause some error if I attach to the wrong wire. Please tell me the exact location (which fuse box, and fuse number).I am using the Rally Remote Control Switch from flebay:
http://cgi.ebay.com/ebaymotors/REMOT...item43a2e3403f
and the fog light from:
http://www.amazon.com/Hella-00858200...8200500&sr=8-3
and the HID kit from:
http://cgi.ebay.com/ebaymotors/ws/eB...=STRK:MEWNX:IT
Please help ..I will post picture with the result.
All help will be much appreciated..



