2 posts · Joined 2016. #1 · Aug 28, 2016. Hi guys, I'm new here so may not have posted this in the right place. I have a 52 plate 1.6 ford focus and the rear drivers side brake light was not working. I have tried and tested the bulb it is working fine. I have also tested the bulb holder which is ok too. I have checked the fuse which is fine.
The broken filament inside the bulb is a sure reason why your tail light is not working! #3. Bulb socket problem. It is a good idea to check out your socket after you pull out the tail light, so you don’t have to do it again. While at it, after taking the bulb out, use a multimeter to check if it is getting any current.
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