If you wire the park lights directly to the headlights, they will come on when you turn on the headlights; but the headlights will come on when you turn on the park lights! The switch handles this with multiple contacts that essentially two three-position switches for park and headlights: PARK OFF ON ON HEAD OFF OFF ON _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com