1993 Ford Aerostar Headlights acting strange

I have been having problems with my Aerostars headlights. when the van is turned on there are no DRL or dims. they don't come on automatically or manually. but when I hit the high beam switch my dims come on, not the high beams, or the high beam indicator light. I have checked the fuses and they are good. Also my warning chime telling me my lights are on when I open the door is still working.
what is wrong with my vans lights?