Went to the junk yard and scored a headlight switch with the fog light button so I grabbed the bumper brackets and the harness from the plug under the bumper to the light as well. After a few minor modifications to my bumper cover, I now have some KC Daylighters mounted up front but they wont turn on. The "Auto" setting on the headlight switch works so what am I missing? Relay? Fuse? Both? Black wire on the original harness; "hot" or ground?