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I would suspect the dimmer switch. But could be a bad wire/short.
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∙ 14y ago
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Why would only your hi beams work on your 1994 F-350 and not your low beams?
low beams my have burned out
Why would the high beams work and the low beams not work on a 1977 corvette?
Bad bulbs?Bad Hi-low switch?
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Check bulbs Check hi-low switch
Why does your low beams work and not your high beams on your 1992 camaro rs?
hi-beam switch is faulty
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check fuses, then most likely need to replace the high/low switch
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check the wiring at the hi-low switch.
Why dont high beam and low beam headlights stay on together. Lights work but low beams turn off when high beams are on.?
In most cases the high and low are separate elements in the same bulb and cannot work at the same time. Headlights pull a lot of power and to have them run together would be too much for your charging system to handle at once, not to mention the heat they would produce. Fog Lamps and Low beams and Fog Lamps and HI beams. Fog Lamps and HI beams, in many states, you are not permitted to run HI Beams and Fog / Driving lamps simultaneously. There is an SAE directive on this. There is either a relay or DRL module that prevents the Fog/Driving lamps to be energized when the HI beams are activated.
What will cause the Hi beams but not the low beams to work on a 1991 Isuzu Impulse with all bulbs testing good?
Possibly a defective high beam switch, or associated relay.
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lowIn the rain, it's best to use your:Low beams
98 Buick Century both low beams go out while driving hi beams work?
Check the multifunction switch in the column first as it controls both high & low beams, as well as check the daytime running light module if so equipped.
1992 Saturn SC Hi beams work on both headlights Lo beams only work on drivers side. Changed right with left and left with right but right lo beam still not working.?
right side low beam is burned out
Why do Running Lights and Hi Beams work but low beams and fog lights don't in a 95 Explorer XLT all fuses ok?
Just had the same problem. Replace the Multi Function (turn signal) switch on the steering column
