3rd brake light problem

I know that the system uses a silicon transistor that is a logic gate of type for this light . It is an  [OR gate] transistor. This allows the Cyclops [third light ] to come on when you put on the brakes. Your taillights come on and with the 3rd light [brake] together. Now with a turn signal flashing either L or R the 3rd brake will continue to illuminate with the opposite light that remains on. I believe that that the [Gate] of this transistor is forward bias,{shorting internally} and causing this light to remain on or not come on {depending on the transistor's depletetion zone temperature} , and needs replaced. Now where is it located is an answer the dealer will need to help you with. This just my { ANY IDEAS ? Post Reply }  Hope this helps.