"dimmer works" you mean the hi-lo beam dimmer switch or the dimmer for the dash lights? Check the hi/lo dimmer switch, (pull the wires off it and make sure you are getting 12 v to the middle wire) I think it is the middle one). You should be able to connect the hot wire to one of the other ones to get your headlights. Also, look at the main hot coming into the headlight switch. That gets hot and discolors or rusts sometimes...
