Put these lines under here into to <beaconLights>
			<beaconLight node="XXXXX" filename="FS25_Rotorbar_Prefab/Rotor.xml"/>
			<beaconLight node="XXXXX" filename="FS25_Rotorbar_Prefab/Rotor.xml"/>
			<beaconLight node="XXXXX" filename="FS25_Rotorbar_Prefab/Rotor.xml"/>
			<beaconLight node="XXXXX" filename="FS25_Rotorbar_Prefab/Rotor.xml"/>

Then put the rotorbar where you want it. 

Take the four nodes of the rotors in the rotorbar and put one in each line. Delete the X's nad fill in the nodes.