Tired of buying axillary cassette adapters to play music in your is300?! Well I have a solution for you! Haha! By the way you don't have to solder the wires you can use butt connectors

Din kit (make sure its the right size)
https://www.amazon.com/gp/product/B00...

Amp bypass
https://www.amazon.com/gp/product/B07...