1. A multiaddress control system for one-way communication within a vehicle from a transmitter station to at least two receiver stations for remote control of power accessories, comprising: an electrical power source in said vehicle for powering said power accessories; a two-conductor power main system connected from said power source to each of said transmitter and receiver stations for powering said transmitter and receiver stations and their respective accessories; a two-wire control communication bus for interconnecting said transmitter station with each of said receiver stations; a plurality of switch means (34, 32) at said transmitter station for producing switch signals intended for controlling respective designated accessories at first and second ones of said at-least-two receiver stations; an encoder at said transmitter station, for receiving said switch signals from said switch means and encoding said switch signals to provide signals for transmission via said communication bus to said first and second receiver stations, said encoder and said switch means being the only transmission apparatus at said transmitter station for remote control of said designated accessories; a first decoder at said first receiver station for receiving said signals of said communication bus, said first decoder being the only receiving apparatus at said first receiver station for remote control by said transmitter of respective accessories at said first receiver station; a second decoder at said second receiver station for simultaneously receiving said signals of said communication bus, said second decoder being the only receiving apparatus at said second receiver station for remote control by said transmitter of respective accessories at said second receiver station; said encoder comprising means for encoding to provide said signals for transmission to said first and second receiver stations in the form of receiver-station addresses and designated-accessory commands, one receiver-station address and one designated-accessory command at a time, one of said decoders recognizing its address and executing the corresponding designated-accessory command; communication means connecting said first and second decoders to corresponding power accessories at said first and second receiver stations respectively, for carrying signals from the decoders to the respective designated accessories for executing said corresponding designated-accessory commands; said first and second decoders comprising means for utilizing power from said power main system to drive the designated accessory in response to said corresponding designated-accessory command; said designated accessories comprising a first power window and first power door lock at said first receiver station and a second power window and second power door lock at said second receiver station, and said encoder and said first and second decoders operating in accordance with a protocol for remote control of said power windows and power door locks.