0
Get a multimeter, something that can measure DC voltage and continuity. First check the fuse for the headlights. Set the multimeter for continuity. Test across the fuse (you see those two tiny metal pieces barely sticking out of the plastic top of the fuse? Those are there to check the fuse without removing it) by putting on mulitmeter lead on one tiny post and put the other lead to the second post. If the multimeter beeps you have a good fuse. Next pop off the rubber boot hiding the headlight bulb and electrical connections. Twist to remove the bulb from the housing. Careful, don't touch the bulb as the oil from you skin will create a hotspot on the bulb which causes premature burn out. Carefully remove the bulb from the socket. Now check for continuity across the bulb. Same basic procedure but now one lead goes to the bulb housing (the ground) and the other goes to the wiring post. If the multimeter beeps the bulb should be good. If not, replace the bulbs. Both of them. Its always best to replace both bulbs at a time. If the fuse is good and the bulbs test good then you need to turn on the headlights at the switch (don't have the bulbs hooked back up yet). Now set the multimeter for DC voltage. Put the leads to the headlight connectors, one to ground and the other to the positive connector. If you're not getting at least 12 volts (+12 or -12 doesn't matter. All -12V means is you put the red (+) lead to ground and the black (-) lead to positive) then you're probably looking at replacing the switch.
What else can I help you with?
Why wont tail lights work but headlights do?
my headlights work but my taillights and dash light dont work whats wrong
Why does your headlights work when your tail lights dont and your tail lights work when your headlights dont on your 94 ford ranger splash?
one of two things, BAD EARTH, or Relay switch.
Your headlights dont work in your 97 eclipse?
check the fudes check headlights for power then check light switch
Brakelights dont work but headlights do?
check the fuse on the fuse box, the bulbs,or the connections.
Why would the bright lights not work on a 2000 Mazda B2500?
Switch? both headlights?
What should I do when my 2000 Cirrus brake lights work when the headlights are off?
ummm... your brake lights should ALWAYS work whether your headlights are on or not, that's how people behind you know you are stopping.
Why do the headlights on a 2000 Malibu sometimes come on and sometimes don't when starting the car?
if parking brake is on, the headlights when first started, will not work until brake is released.
Why are your 1999 Volkswagen Passat tail lights not working when you turn on the headlights?
Parking and dash lights also on this circuit - do they work? Check fuses Could also be a bad headlight switch
Why does 1999 passat 1.8T manual only cranks occasionally windows only work when engine starts headlights and horn are fine new battery I dont think its the ignition switch because all else comes on?
Loose or corroded battery cables? Weak battery? Bad ignition switch?
No turn signals or tail light on rear of Monte Carlo?
if the headlights work it is bad wiring if they dont its a fuse
Why dont your high beams turn on but your low beams both work on your 2000 ford expedition Is there a fuse for it?
It sounds like the low beam/high beam switch is bad. Fuses are not the problem since they are built into the headlight switch and would cause headlights to blink or not come on for both high and low beam headlights.
Why would your headlights on your 2000 dodge durango not work if the fuses and the bulbs are fine?
Your wire connection to your headlights from your fuse box might be loose or broken somewhere. Try running a jumper wire from your headlights to the fuse box. If the headlight work when you try this, then your wiring has an open circuit and needs to be replaced, or fixed.
