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My son owns a 2005 Honda Accord coupe and the passenger side headlight will only work in the high beam setting. I have replaced the bulb already and it does not make a difference. We have checked the fuses, and there are no blown fuses for the headlight circuit. I have read that a relay could be one cause of the problem, but I am not sure on where that is located. Is it in the fuse box under the hood or located elsewhere? I know that contacts in relays can become corroded, but I am not sure that is the problem. Does this seem to be a common problem with this type of Honda? Thanks

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The headlight relays are located in the underhood fuse box. The relay is not a common failure, also the relay feeds both side low beam lights so it is not the failure in this case. The ground wire is common to the high and low beam filaments, so again this is not the issue. Check for power on both sides of fuse #6 in the underhood fuse box. If power is OK there check for at least 12 volts at the red/green wire at the headlight bulb connector. Also test the new bulb, new does not guarantee good. Move the working left bulb to the right side.

  • Also check the contacts at the light bulb socket to ensure no corrosion has occurred there. – Pᴀᴜʟsᴛᴇʀ2 Dec 4 '15 at 15:51

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