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i wanted to change the head unit but im afraid that i 'm going to loose functions from the touch screen to use the radioand the cd changer. so how can i bypass the stock amp for a better one without changing anything alse? how is the out put on the stock head unit is it line level? all i wanted to do is change the amp and speakers until i get a another car and i could finish building the system with a nice head unit. is there anyway to do this thank you hector

the amp im going to buy is just for the front pair of speakers my question is am i going to totally by pass my stock amp or or do i rewire the out put of the stock amp to the high level inputs of the new amp

any more help please thank you hector

hi i wanted to change all the speakers and amp from my 1998 gs400. i going to go with these alpine component speakers and one of these amp cant decide yet alpine 420 or alpine 320[/so i wanted a diagram for the amp in the car to see what cables i'm going to reroute from that amp(stock) to the new one to which im connecting the component speakers. also i would like to know what everyone thinks of these speaker and amp that i have choosen. thank you hector