Just wondering if there are any car audio speciaists here.
I'm repacing the broken factory headunit in our car with an aftermarket one. AFterdoing some research I found our car has a factory instaled AMP under the passenger seat. How does one go to connect an existing headunit to a factory amp.
i.e. each speaker from the existing headunit to the amp has speaker +. speaker -, and a shield. so there are 4 sets of those (FL, FR, RL, RR). The headunits only have L and R pre-amp out which obviously have only signal and shield.
I can do some trial and error but keen to hear a professional's opinion.