Leadlights on, Low beam Headlights on, High beam I think you'll find one wire has +12V when the headlights are on, whether low or high beam. When one goes you lose the low beam for instance but the highs will still work, or vice versa, typically the low goes out first since it's the most used. Modern cars have this switch on the steering column or dashboard, while older cars usually have a dimmer switch on the floorboard. I got back from plowing the other day and noticed that the passenger side headlight on my Fisher MM1 was out. 1. Only the low-beams or high-beams work: If your headlights both work but only when the low-beams or high-beams are on, the problem is likely with the dimmer switch. Jump to Latest Follow 1 - 20 of 25 Posts. One of the Headlamps Doesn't Work. My passenger side headlights work intermittently. Most head lights have two elements one for high beam one for low beam. Dimmer switches are usually integrated in the steering column where the headlight switch is mounted. Headlight Bulb Keeps Burning Out. Check all wired connections and look for any exposed wiring. When you activate your high beams the low beam filament is turned off. Both low and high beam just go out from time to time, they will both work for a couple days and then they wont for a couple days. 1; 2 ... my head lights were out!!! When I plug in the plow Both work on high beam but only the driver side works on low beam. A bad dimmer switch can also result in the opposite problem, where low beams working but high beams are not. honda headlight … One for low beam and one for high beam. While driving my 2014 Chevrolet Traverse LS at night my low beam headlights went out the next day had both headlight bulbs changed drove for a couple of days lights went off again next morning had drl but no high beam unless I continually hold the lever c. See all problems of the 2014 Chevrolet Traverse . Once you've verified that, put the DMM in resistance/continuity mode and measure the resistance of the "other two" wires to battery negative in each mode. Removing a Headlamp If you only have one headlight assembly per side, there are two separate filaments. 2007 Honda CRV, low beams do not work, but high beams do. I recently purchased a 1995 ch613 and I am having an issue with the head lights low beam works fine but the high beams will not come on even with the flash switch. The other two wires will have no voltage in any mode. When low-beam headlights do not work, but high beams are functioning correctly, the most likely cause is a bad dimmer switch. When one headlamp doesn't work, whether it's the high or low beam, check the lamp or bulb itself first. Should you find yourself replacing your headlight bulbs way too often, there more than likely is an underlying issue. I thought no problem Ill get a new headlight, went and put it in today and still nothing. Headlights out, only high beams work. If so, replace it. Check and see if your high beam bulb is the issue. I replaced both head lights 3 months ago due to one burning out. the indicator on my dash board was still lit so i assumed i was seeing things and tried the high beams on and off (VERY late and no one but me and my smart on the road!) could it be the relay switch and how is it that I find it to change it out? Need some help. So now I have both high and low working on the truck. The high beam indicator comes on on the dash but the lights themselves will not work have check the fuses and bulbs any help would be greatly appreciated thanks Getting access to a headlamp or bulb for inspection or replacement is not too difficult. Most likely cause is a bad dimmer switch on the truck got from. Filament is turned off where low beams working but high beams do, check the lamp or for... Works on low beam beam one for high beam but only the driver side works on low beam the... 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