The low beam headlights do not work on my 1991 nissan truck. The high beams work fine. Does anyone know what I can check or what might be causing the problem? I appreciate any help I can get.
Thanks,
Clyde
Clyde,
I've been troubleshooting this same problem on a different vehicle this week, and I can give you the steps I'd take.
1. If both sides went out at the same time, the problem is *NOT* likely to be the bulbs.
2. Check the fuses to see if both low beam lights are on the same fuse. Many cars have one fuse for low beam and another for high beam, so both lights out at the same time typically means fuse blown.
3. If the headlights are OK and the fuses are OK, then the problem is *LIKELY* the headlight switch. In my case, AutoZone has one and it can be installed easily; but in your case, that may not be as simple.
Please post your findings or comments.
I just fixed this problem on my car it was the daytime running light module
First check low beam fuse if ok, check the dip switch, there should be battery volts at the switch with the head lights switched on, there should be battery voltage to high beam terminal at the dip switch, now dip to low beam there should now be battery voltage on the low beam terminal ,if not the dip switch is faulty,if ok check for battery voltage at the head light , if no voltage broken wire or connection to the light, if ok check head light bulb and earth wire to the head light.
They do now have more than one beam.
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