# Resistor needed for: Arduino Micro + 12V Pump + HF3FA/005-ZTF relay

I am using an Arduino Micro to turn On/Off a 12 V Water Pump. I am using a HF3FA/005-ZTF relay --> Link

Here's how I connected everything:

I control it with this code:

const int GO = 12;
void setup() {
pinMode(GO,OUTPUT);
}
void loop() {
digitalWrite(GO,HIGH); //WaterPumpON --> ON
delay(60000);
digitalWrite(GO,LOW); //WaterPumpOFF --> OFF
delay(60000);
}


Everything is working as it is supposed to:

QUESTION: Since I'm new electronics I would like to know if I need any kind of resistor somewhere within that circuit? I did not find similar circuits while googling and the only useful info was in this video: YouTubeLink_german and he does not use any resistors but he uses a different relay.