Steering Wheel Controls

The Steering Wheel Controls consist of several components. They include the following:
^ Steering Wheel Radio Control Switches
^ Supplemental Inflatable Restraint (SIR) Coil Assembly
^ Radio

Steering Wheel Radio Control Switches
The Steering Wheel Control Switches control Radio power, volume and station frequency. These switches are actually a ladder network consisting of the switches and a series of resistors. The ladder network is arranged so that each switch has a different resistance. This allows a different voltage output to the Radio for each switch pressed.

SIR Coil Assembly
The Supplemental Inflatable Restraint (SIR) Coil Assembly contains four wires used by the Steering Wheel Controls. This Allows voltages to be sent from Steering Wheel Switches for the Radio while the Steering Wheel is being turned.