Gælder for: MODEL 903.663 with CODE (ZV1) Minibus Group 15 School bus turn signal system via door control of outward swinging door with On/Off switch MODEL 904.663 with CODE (ZV2) Minibus Group 18/21 School bus turn signal system via door control of outward swinging door with On/Off switch MODEL 903.662 /663 /672 /673 with CODE (ZV3) Minibus Mobil School bus turn signal system via door control of outward swinging door with On/Off switch MODEL 903.662 /663 /672 /673 with CODE (ZV4) Minibus Taxi School bus turn si