Pre-Purchase Question: Do I need a harness

Will I need an HID harness to convert my fog lights to the ddm tuning 35Watt HIDs? Or will the stock wiring work just as the stock wiring has been working for my low beams? I am just about ready to purchase and DIY install of the fogs in the stock housing just need to know if I will need the harness or if stock wiring works on the 2009 ralliarts.

Thanks to all who respond

-Patrick

I would suggest getting a relay harness, play it safe the first time before you melt your harness and have to redo it all.