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Hey guys! This is my first post here, I am having a problem that I still can't fix with my 2005 civic ex. About a month ago I realized my passenger side brake light was out so I changed both rear lights. Everything worked fine for about a day, then the passenger side brake light stopped working again. I then put the new bulb from the drivers side in the passenger side and still the same thing, so I know its not the bulbs. What confuses me is that I seen for myself both brake lights and tail lights working for a day. I checked all the necessary fuses and they are all good. I tried for weeks to find an answer on here and Google but everything I found is for both brake lights not working. I have a multimeter but don't know which wire to even check, and it might be the plug but it seems fine and all the wires seem connected. Thank you everyone.

 
Rep Power: 518

Try swapping the bulb sockets.

 
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Thanks ezone. I used the multimeter and all the wires had good voltage so I bought a new socket because that was the only thing that I thought could be wrong and after putting all the wires back into it, it worked! I have no idea what caused the plug to go bad but after driving with a missing brake light for awhile I am glad the problem is solved. Thanks