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High beam lights always on!

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Old 12-11-2018, 06:55 PM
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Default High beam lights always on!
I have a 2001 Dodge Ram 1500 sport model. When I turn on the headlights the high beams are always on to. The indicator is also barely illuminated while on low beam setting, but gets bright if the high beams are clicked on. I’ve replaced the relays, and the headlight switch. Also swapped plugs around on back of bulbs, so I know they are on correct. I do not had the drl module on my truck. Already checked. My fog lights are not working neither. I think it has to do with the truck thinking the highs are on. Would the combination switch cause this issue? I’ve given all the info I could to help and everything I have tried. Any suggestions?
 
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Old 12-11-2018, 07:19 PM
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Do you have the correct bulbs in the headlights?
 
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Old 12-11-2018, 07:31 PM
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Yes correct bulbs in each one, tried switching them and the high beam light was fully illuminated at all times. Switched them back and now it’s partially illuminated until clicked to high. Then it’s bright. But the highs are on all the time with the lows.
 
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Old 12-11-2018, 07:33 PM
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Got tilt steering? If so, pull the covers off the column, and check the connector at the multi-function switch. Those are a known problem area on these trucks.
 
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Old 12-11-2018, 10:34 PM
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Checked the wiring going to the switch and everything checked out. No cracked wires, or broken, or diconnected. Unplug the switch and the headlights don’t come on anymore. Plug it back in same thing as before, both high and lows on.
 
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Old 12-12-2018, 06:37 AM
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Originally Posted by john91
Checked the wiring going to the switch and everything checked out. No cracked wires, or broken, or diconnected. Unplug the switch and the headlights don’t come on anymore. Plug it back in same thing as before, both high and lows on.
I'm thinking bad ground. Or a bad power wire. The multifunctional switch could be an issue. I had the same problem as you and it turned out to be a bad ground and multifunctional switch.
 
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Old 12-12-2018, 09:15 AM
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Looking at the wiring diagrams, I am thoroughly confused. all four lights have a common power source, all four lights appear to have a common ground. Looking at it, it seems that all four lights should either be on, or all four should be off.... depending on the position of the multi-function switch. I know that can't be right..... but, I am unable to determine how the low beams get their ground, without also grounding the high beams.
 
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Old 12-12-2018, 09:21 AM
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Originally Posted by HeyYou
Looking at the wiring diagrams, I am thoroughly confused. all four lights have a common power source, all four lights appear to have a common ground. Looking at it, it seems that all four lights should either be on, or all four should be off.... depending on the position of the multi-function switch. I know that can't be right..... but, I am unable to determine how the low beams get their ground, without also grounding the high beams.
The relay for the high beams gets a signal when you want the high beams on
 
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Old 12-12-2018, 09:24 AM
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Yeah, but, all four headlights share that common ground. Check out the wiring diagram, it's really confusing.
 
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Old 12-12-2018, 11:35 AM
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Moparfanatic21 which ground happened to be bad for you? I’m going to swap out the multi function switch tonight after work with a new one. I’m just as confused as you guys. I appreciate all the input!
 
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