2000 dodge durango no headlights all other lights work have checked all fuse and relays replaced head light switch put new bulbs in the flash to pass on the dimmer switch works

the switch supplies power to the relays that switch on the lights according to the position you have it at
so on high beam there will be 2 high beam lights working
on low beam there will be 2 low beam lights working
back to passing lights or flashing head lights , both beams will work so the switch is the last item to consider
Now with only one side beam not working it comes back to the ground on that light for that bulb
remember that electricity follows the path of least resistance so it the ground is bad the current will ground out through another point including a light which will switch that light off or make it not work
remember the brakes light that flask when an indicator is used --same thing

Head lights and tail lights usually work on a separate system to your cars computer. Reason being is the amount of amps. Far too much for a computer to handle. I would be checking fuses and relays. If they test as OK, then you will need to install a new headlight switch

There should be a relay that controls the headlights. Probably more than one. If you find the relays for the light, pull that relay and replace it with one from another light. If the light comes on then the relay needs to be replaced.

If your headlight switch is bad,this video will show you how to replace it.">

I had a similar problem on my 2001 Caravan. Turned out to be a loose connection between the frame control module and the fuse box. I unscrewed the frame/front control module from the fuse box and bent the tabs slightly to make better contact. Then tighten down the module securley. Need star driver to loosen screws

check under the hood fuse pannel

change the amp meter boom your back on the road

There is a circuit breaker inside the headlight switch body. It gets weak over time and use. The breaker is actually mentioned in the owners manual. A new switch is about $75.00 at the local parts store. You must remove the front of the dash to change the switch. Mine would go off and then in about 30 seconds reset and the lights would come back on. I would be driving down the road with my headlights flashing as the circuit breaker opened and closed. New switch = problem fixed.

Look under the hood.
There is a large relay which should have some info about lights on it.
I had this exact problem with my dodge ram

OK there is a short in your car
take all the light bulbs out of the light that trigger the problem this break the current place one bulb in at a time checking that the fuse has not blown this will pin point where the problem is
once you find the problem you can replace the socket as it may have started to corrode check for water
once you replace the socket you should not have a problem
if you do let me know
dj_ricko_1988 at hot mail dot com