I have a '17 Corolla with Entune Plus 7" system and I want to maintain the factory headunit and steering wheel controls but I want to add aftermarket speakers and amplifiers. Is this possible and what harnesses are needed? I plan on (1)15" sub and a monoblock amplifer and replacing the speakers and possibly amping them as well with a 4 channel. Does anyone know what connections the rear of the Entune plus system has?
Thanks!
Thanks!