no dont hook it to the red i blow fuses when i did.While common sense would tell you to install the kill switch just like the factory installed the stock handle bar kill switch this is NOT the way to install a kill switch on the YFZ450. You will first need to remove your plastics to gain access to the proper wires for installation. Located by the oil filler hole on the cases you will see a bundle of wires, follow these wires upward. The wires will split into pairs, continue to follow the red (maybe pink) and white pair.
These wires will lead you to a plug. Using a small saddle type wire connector, take the long wire from the Tether Switch and connect/splice it to the white wire just after the plug connection. The other wire coming from your Kill switch (the short one) goes to any available frame bolt on the bike and is your ground wire.
Your tether is now wired properly; mount it securely to your handlebars and you're ready to ride.
These wires will lead you to a plug. Using a small saddle type wire connector, take the long wire from the Tether Switch and connect/splice it to the white wire just after the plug connection. The other wire coming from your Kill switch (the short one) goes to any available frame bolt on the bike and is your ground wire.
Your tether is now wired properly; mount it securely to your handlebars and you're ready to ride.