Back light problem

[rossd]

Hi guys, just noticed my back light playing up. The back light works as normal untill the lights are turned on and then it dosent do anything even if the brakes are pressed, but when the lights are turned off and the brakes are pressed the light works :S cheers guys.

[lewisdale]

check the earth points, and wiring connectors, also make sure the bulb is connecthing properly in the fitting