Can't connect my Arduino Yun to a SSC32-U

Hi everybody!

I have a new Arduino Yun Rev 2 and I am trying to connect it to a SSC32-U board to control some servo motors. I have TX(on the Arduino) to RX on the SSC32-U with a male to female jumper wire. And I have gnd to gnd. And my Arduino plugged into my PC via USB

I am trying to run this code:

void setup() {
Serial.begin(9600);                                                        //Start serial communication at 9600 baud rate
void loop() {
  Serial.println("#0 P750 #1 P750 #2 P750 T500");         //Moves 3 servos at same time
  delay(1000);                                                              //Wait 1 second
  Serial.println("#0 P2200 #1 P1500 #2 P2200 T500");

This code should move the motors correctly, but I cannot get the two boards to 'talk' to each other. Is there something I'm missing?