1. An illuminating device for vehicles comprising:at least one LED branch (Z; Z1, Z2) with at least one LED (DL1. . . .DLn; DL11. . . DL1n, DL21. . . DL2n), and with a controlled LED power supply (1, 5);
a driver (3) which provides dimming signals (SDA, SDD; SDA1, SDA2; SDD1, SDD2) for the LEDs;and
an electronic switch (Ts; TS1, Ts; TS1, TS2) associated with the at least one LED branch (Z; Z1, Z2), the electronic switch being supplied with a PWM dimming signal (SDD; SDD1, SDD2),
wherein the at least one LED branch is bridged for the purpose of branching off a partial current (IN, IN1, IN2) from a controlled auxiliary circuit (N; N1, N2) having a current controller with an analog controller (2, TN; 21, TN1, 22, TN2) which is supplied with an analog dimming signal (SDA; SDA1, SDA2).