Auxiliary steering wheel command system

A system for transmitting a selected one of a plurality of commands to be multiplexed and decoded to control output devices comprising:

• first circuit means including a plurality of independent actuating switches;
• second circuit means for generating a plurality of voltage signals in response to the condition of said actuating switches;
• wherein the voltage signals from said second circuit means are ratiometric to a plurality of reference voltage signals derived from a common voltage node coupled to said first and second circuit means;
• slip-ring means for receiving said voltage signals and supplying them to a third circuit means;
• a plurality of output devices operative in response to voltage signals from said third circuit means;
• said third circuit means including decoding logic means to produce a selected one of plurality of output signals corresponding to the condition of said independent actuating switches to energize a predetermined one of said output devices.