Turn signal lamps are ______ in the front of the vehicle and amber or in the rear of the vehicle. Parking and side marker lamps are ________ operational when the headlamps are . The ____________ switch controls the brightness of the instrument panel lamps ________________lamps on the instrument panel identifiy problems within the vehicle system. a) White; Always; Dimmer; Warning b) Red; Only; Wiper; Indicator c) Amber; Always; Dimmer; Indicator d) Green; Only; Wiper; Warning