Where is the headlight relay switch located

SOURCE: 1997 Hyundai Accent is acting funny in the

There's only one relay, but two fuses, both located in the underhood fuse/relay box.

Sounds like you have a wiring problem since sometime the left works and the right doesn't, then the right works then the left doesn't. Might be the multi-function switch on the steering column in combination with the connector M10-1, EM01, SE14 & 16.

SOURCE: Passenger low bean headlight doesn't work. The

You will need to provide what year car, engine size, ect so a diagram can be found to help you.

SOURCE: my passenger side low beam headlight is out. the

Check the fuse. There are seperate fuses for right and left. You dont mention if the high beam works for that side? If it does, the fuse is good. The GREEN wire at the bulb is the ground for the low beam. If that wire has power, then the ground is bad. If the high beam works, the hi'lo beam switch is good, and there is a problem between that headlight and the Engine Compartment Junction Block

SOURCE: low beam headlights keep burning out, 8 times on

If you visit many forums for Elantras, you will see that frequent headlamp failure is very common. It has been discussed over and over again and it is thought that always turning the lights off and on via the stalk switch is recommended. If you leave the light switch in the on position, when you start your car, the lights briefly flash on then off again as you turn your ignition to the start position and then turn on again as you release the key to return to the "on" position. This may be causing a power surge which creates stress on the bulb filament and can only be avoided by using the light switch instead of the ignition to power up the headlamps.

SOURCE: replacing headlights I have a blown low beam

to replace the headlights themselves, no. under the hood, find the headlight. where it connects to the headlight lamp, it should simply twist off and pull out. Then you must unclip the clip holding the light on. It sounds sort of confusing, but it's really easy! Let me know if you need a bit more clarification.