IS300 radio?

[quote=“Boomin99GT,post:7,topic:37979"”]

Goodluck if you’re not buying an aftermarket amp. Running the aftermarket cd player into the factory amp creates many fun noises. Check out www.my.is for more info from people. From what I hear the harness you can buy everywhere is garbage.

[/quote]

if you jump the input and output harnesses and dont use on of those bypass harnesses. no noise.