[Al Skierkiewicz]

yogi,
You need to use the supplied compressor code and connect the pressure switch as stated above. Once you have that, the compressor will turn on when the robot is enabled. The LEDs on the DSC tell you a lot about what is going on there. The three LEDs for power all must be on and bright. The LEDs in the relay area will tell you the status of the relay outputs. (PWM cables do go bad) and the the RSL has an LED (next to the RSL connector) that should flash the same as the big orange light you add to your robot.