?TAILLIGHT FLICKER WHEN TURN SIGNAL AND BRAKE LIGHT ACTIVE . Taillight flickers when turn signal and brake light are active; see video in this link: tinyurl.com/zmr65st When the following preconditions occur simultaneously: Engine on (idle). Tail light active (switched on). Brake light active (through actuation of the brake pedal). Turn signal active (switched on). Current fluctuations reduce the voltage to the tail light.
