i have a 2000 4runner with the factory stereo and i want to put a Boss 822UA head unit in. Is the current wiring harness compatible with the boss stereo? Also, i want to wire an amp to my new stereo. do i need a new wiring harness?
You will need a receiver harness and a amp installation kit. What type of amp kit depends on how many channels and how much power you plan to install.
