Master plan and your project:
Carefully remove the dashboard components surrounding your radio by removing any set screws or hex bolts securing the fairing and carefully pulling the component away from the vehicle. You should see a couple of set screws holding in the stock radio. Remove these, and slide out the old head unit.
A confusing collection of colorful wires should follow the stock radio. Disconnect these by carefully prying apart the wiring harness connection that connects the stock radio to the vehicle. The harnesses can be tough to pull apart, but with some wiggling it will eventually separate. Disconnect the radio’s antenna connection and set the old head unit aside (don’t throw it out--if you want to keep your new system when you sell your car, you’ll eventually need to re-install the old radio).
For Speaker wire go to: