1999 Mirage Door Lock Module

Just installed Viper 550 ESP w/remote starter.  All works well except doors will not lock/unlock...Have probed Blue/Green wires and they are throwing the negative outputs perfectly.  The door switch is also throwing the negative, however the door locks still do not work.  Checked driver control module and motor wires are only negative, no power to motor.  The door lock control module under dash may have to be replaced.  Where can I purchase one at the best price.  Any help would be appreciated.  Thank You

Irvin Cruz