The LH steering wheel control switch controls volume and station frequency. The LH steering wheel control switch receives power through circuit 43. When one of the LH steering wheel control switches is pressed to the desired function, a network of series resistors allows a different voltage output through circuit 1796 to the radio.

The inflatable restraint steering wheel module coil contains two wires used by the LH steering wheel control switch. This allows voltage to be applied by the LH steering wheel control switch to the radio while the steering wheel is being turned.