How do you change your resistor spark plug cap to your upgraded cap for your 2004 Yamaha yz 250?

To change the resistor spark plug cap on your 2004 Yamaha YZ 250, first ensure the motorcycle is turned off and cool. Remove the existing cap by unscrewing it from the ignition coil wire. Then, attach the upgraded cap by screwing it onto the wire securely, making sure the connection is tight. Finally, replace the spark plug wire cover if necessary and ensure everything is properly seated before starting the bike.