I know some of you on here have changed out your stereos and Ive been looking to do the same after searching crutchfield the adapter that they sell for 70 dollars refers to the bus power and altering the power signal so that the aftermarket radio can use it. I have also seen the regular adapter, the plastic plug with the colored wires coming out. My ? is, do I have to get the power altering adapter or will one of the 15 dollar regular ones do the trick. Any info you guys can share would be a big help.