Light bulb advice please

mr-serious, Sep 12, 3:15am
I failed a W.O.F. because my rear brake light only works when my lights are off. When I turn my lights on the tail light goes out when I brake. Wierd. Is it just a bulb or something a little more! Thanks.

jmma, Sep 12, 3:19am
Bad earth. Clean bulb base and check earth wire.