D35/ST Rear Taillight doesnt turn on when turning on the front light.

D35/ST Rear Taillight doesnt turn on when turning on the front light.

Check the connection between the taillight and controller, if the connector is loose or the wire is damaged replace that. 

On the other hand, if you notice that the rear taillight is working when pressing the brake (feature available in few newer models), this points toward a controller issue. In this case replace the controller. 

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