Guys need your help with one of the brake light on a mkIV astra. If I press the brakes, the brake light comes on but doesn't seem to be as bright as the other. Also if the sidelights are on and the brakes are pressed then the same brakelight/sidelight turns off completely.
replace both bulbs. the bulbs operate stop and tail lights in one, common problem is that the filaments has fused together/ or possibly the bulbs are in the wrong way
Lighting unit in the Mk4 is a bit poop - if you're not careful it does some wierd and wonderful things with bulbs.
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