Remove the Dashboard Speaker grill. You can use a Credit Card or any other plastic Card for this.
Remove the stock speakers using the screwdriver and Wrench.
De-solder the Socket from the stock speaker.
Bass Blocker can be soldered serial (+ve) terminal of the Polk Speaker
Connect the Speaker wire from the car audio to the connector and fix the screws.
http://carspeakerupgrade.blogspot.ae/ (http://carspeakerupgrade.blogspot.ae/)