int relay=12;
int led=13;
void setup() {
  pinMode (12,OUTPUT );
  pinMode (13,OUTPUT );
  // put your setup code here, to run once:

}

void loop() {
  digitalWrite (relay,HIGH );
  digitalWrite (13,HIGH  );
  delay (1000 );
  digitalWrite (13,LOW );
  digitalWrite (13,HIGH );
  delay (1000);
  // put your main code here, to run repeatedly:

}