HOW TO FIX MY LIGHTS?

hi i woner if anyone could help me ,my illumintion lights and tail lights and side lights are off ,does anyone no what the problem is and how to fix this myself all other lights are working parking etc .. i placed a fuse but this blew . Could someone please get back to me asap as i need my car at night . MONDEO ZETEC 2.0TD HOW O FIX