A method of synchronizing a transmitter and a receiver in a supplemental remote control system for materials handling vehicles comprising: initiating a power on sequence to enable a materials handling vehicle for operation, said materials handling vehicle having a receiver for receiving wirelessly transmitted travel commands; entering a pairing mode to synchronize said receiver and a corresponding controller on said vehicle to a select one of a plurality of wireless remote control devices, wherein said select one of said wireless remote control devices is associated with an operator of said materials handling vehicle; receiving pairing mode confidence signals at said receiver of said vehicle, wherein each pairing mode confidence signal provides a transmitter identification that uniquely identifies a corresponding one of said plurality of wireless remote control devices within range of said receiver; matching a known transmitter identification code associated with said select one of said plurality of wireless remote control devices associated with said operator of said materials handling vehicle with a corresponding one of the pairing mode confidence signals received by said receiver by displaying a list of collected pairing mode confidence signals in range of the materials handling vehicle so that the operator can manually select a listed transmitter identification code for synchronization that matches the transmitter identification code associated with the said select one of said wireless remote control devices associated with the operator; and synchronizing said select one of said plurality of wireless remote control devices associated with said operator to said receiver and said controller of said vehicle such that said materials handling vehicle acknowledges remote travel commands from said select one of said plurality of wireless remote control devices. initiating a power on sequence to enable a materials handling vehicle for operation, said materials handling vehicle having a receiver for receiving wirelessly transmitted travel commands; entering a pairing mode to synchronize said receiver and a corresponding controller on said vehicle to a select one of a plurality of wireless remote control devices, wherein said select one of said wireless remote control devices is associated with an operator of said materials handling vehicle; receiving pairing mode confidence signals at said receiver of said vehicle, wherein each pairing mode confidence signal provides a transmitter identification that uniquely identifies a corresponding one of said plurality of wireless remote control devices within range of said receiver; matching a known transmitter identification code associated with said select one of said plurality of wireless remote control devices associated with said operator of said materials handling vehicle with a corresponding one of the pairing mode confidence signals received by said receiver by displaying a list of collected pairing mode confidence signals in range of the materials handling vehicle so that the operator can manually select a listed transmitter identification code for synchronization that matches the transmitter identification code associated with the said select one of said wireless remote control devices associated with the operator; and synchronizing said select one of said plurality of wireless remote control devices associated with said operator to said receiver and said controller of said vehicle such that said materials handling vehicle acknowledges remote travel commands from said select one of said plurality of wireless remote control devices.