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It can be issue with headlight switch,but as its already been replaced.Try disconnecting high beam headlight wiring from headlight assembly and reconnect direct external wire from headlight switch to headlight assembly,then by switch see if headlight is getting off and turning on or not. See below related help links,similar to your issue.Click the link below:---- Only high beams work but head lights not
working on Ford F350?
Well, where to start... First there are 4 different headlamp systems available for 2001 Dodge Ram 1500.
> WITH Daytime Running Lights and WITH Quad Headlamps
> WITH Daytime Running Lights and WITHOUT Quad Headlamps
> WITHOUT Daytime Running Lights and WITH Quad Headlamps
> WITHOUT Daytime Running Lights and WITHOUT Quad Headlamps
So providing you with an EXACT flow chart of what happens depends on which system your truck is equipped with.
However, the general jist of it goes like this:
The Violet wire you mention is your power feed to the bulbs (high beam and low beam elements) from the headlamp fuse (HOT AT ALL TIMES). The dimmer switch basically determines which of the two headlamp elements is going to get grounded to complete the circuit. When the Violet/White wire gets grounded, that is low beam. When the Red/Orange wire gets grounded, that is high beam.
Just a little "Automotive Electrical Systems 101":
Your Headlamps work just like ALL automotive electrical circuits. The power goes from battery POSITIVE to battery NEGATIVE in order to complete the circuit. PERIOD! Every circuit on your vehicle is as simple as that. If you take a closer look at the wiring diagrams, you will see this.
Hello, on the van you have a high beam fuse and relay. On the low beam you
also have a fuse and relay. Check the fuse/relay panel for a blown fuse
controlling the low beam lights. If you do not find a blown fuse have
some one to turn the key on and turn on the high beam lights. During
this time locate the low beam headlight relay and place your finger on
top of relay, have the other person to switch from high beam to low
beam lights. You should feel a click in the relay when they make the
switch from high to low beam. If not replace the relay and the problem
should go away. Hope this will help you.
On the van you have a high beam fuse and relay. On the low beam you also have a fuse and relay. Check the fuse/relay panel for a blown fuse controlling the low beam lights. If you do not find a blown fuse have some one to turn the key on and turn on the high beam lights> During this time locate the low beam headlight relay and place your finger on top of relay, have the other person to switch from high beam to low beam lights. You should feel a click in the relay when they make the switch from high to low beam. If not replace the relay and the problem should go away. Hope this will help you.
on rare occasions I have seen both low beams burn out I would buy one new bulb and replace either one in the truck if the low beam works with the new bulb then replace the other one as well if the low beam still does not work then replace the headlight switch also check to see if the headlight switch recall was done on that particular truck or if it was under that recall,they had a problem with some of the ram trucks burning up headlight switches but I would check to see if yours might have been one of them there is a wiring upgrade that they will put in at the headlight switch that will cure that,like I said though check to be sure first yours might have not been one of them.
I have a 2004 ram 2500 and all my lights work except for low beams. It is not in the switch, I haver replaced the switch with no change. This is a circuit problem with these dodge pickups. I haven't firgured out what it is but it isn't the switch. and unless the low beams and high beams are fused seperate, it isn't a fuse problem either. i have looked for a fuse and can't even find the fuse for the headlights. Im lost like you!
Easy way to check this is to go under the dash and unplug the remote start.. if the lights go out it is Remote start related, if not goto your local salvage yard and gran another headlight switch.. should be pretty easy...