How do I change the light switch assembly in a '95 Mustang ?

I pull the switch and the headlights come on but no parking lights and no tail lights.No dash lights either. I checked all the fuses, and seem to think it is in the switch.How do I change the light switch assembly in a '95 Mustang ?own a 95' too. best bet,get a haynes or chilton guide ,it talks you through it.