Need help with brush guard lights
 

I recently bought a set of OEM brush guard lights for my H2. The lights did not come with wiring harness, relay or switch. Does any one know who makes these lights for GM so that I might contact them and get the items I need. I already checked with a couple of Hummer dealers and was told that I can't order just the wiring harness, relay or switch. These are the ones that have brackets that fit the brush guard and have black stone guards that say HUMMER on the middle grid. Also will any other wiring harnesses work? Thanks, Chris