We have a 2006 Ford Escape that did not come with fog lights. The vehicle appears to have all of the wiring necessary to just plug into the factory components, ie. Switch, relay and lights. After installing the Ford factory lights, switch and relay, the lights still do not come on. I know they only work when the headlights are on, so we do have the headlights on when trying to turn on the fog lights. Does anyone know if we are still missing something. The local ford dealer says we have everything needed. I can jump the relay and the fog lights come on. The problem appears to be between the switch and the relay. Thanks.