right side brake light on 1992 Buick Century

Brake light on right side does not work when hitting brake, running lights work, and bulb is good

Asked by for the 1992 Buick Century
If you are sure the bulb for the right side brake light on your 1992 Buick Century is good the next step would be to check the condition of the bulb socket and check for a loss of power or ground to the affected socket.