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Message: <blockquote data-quote="ahshawn" data-source="post: 744245" data-attributes="member: 43060">for brake light failure with tungsten bulbs, i had the same problem too. turned out it was just a faulty set of Wurth bulbs...that blew out after swapping out twice! (imagine my luck, i was so convinced it was my wiring or godknowswhatelse). just swapped it out for normal cikai tungsten bulbs for RM5 apiece and has lasted me for 1 year plus since.In any case, my mechanic advised me to do my own self diagnosis as best i can to determine if is it the bulb or something else:1. check wiring harness into bulb cluster for any melting or exposed wiring (that could be cause of shorting)2. check bulb fit in socket, it should not be loose (loose bulbs cause the filament to excessively shake and prematurely burn out). it could also indicate that the bulb is not touching the socket base properly, again causing shorting3. check the socket base for any burn marks or melting of plastic socket (like no.2, an indication of loose connection causing overheating and damage of socket or excessive line voltage)4. last diagnosis if 1-3 is not present is to get a voltmeter and check the line voltage of the socket if it exceeds 12v, excessive line voltage can cause overheating5. or it could be like my case with damn bad luck with QC failed bulbs</blockquote>