A:AnswerFor me installation was 275$ but best buy offers it for 150$ but you may have to buy some additional parts depending on the car so for me even if I got it installed at best buy it woudve been an additional 300
A:AnswerI tapped into my rear speakers because I didn’t have the rca adapter for the sub... works great and sounds awesome! If you don’t have the KISL RCA adapter then tapping into the rear speakers will work as well.