help no headlights or park lights
 

1994 diamante 3.0 sohc
well i was drinving the other night and the lights just all of a sudden went off so i quickly turned off the headlightlight swith and then back on and they worked but a couple miled on down the road they went off again and wouldnt come back on. I bought 2 new relays and a new headlight/dimmer switch and still nothing. I have power on every wire at the relay and it just dont work.I have no light at all the only ones that work is the reverse, brake,hazard and turn signal are the only lights that work. I can cross over the relay and get the high/low beams to work but noting else will work the instrument panel light dont work. I have no clue and i have to get it fixed to go back and forth to work. any suggestion on what to do would help.
thanks