Maestro wiring diagram for aftermarket head unit and amp

budjb · Nov 25, 2018

I'm looking to completely rip out my JBL system and replace it with all aftermarket. The idatalink instructions are clear when you're replacing either the stock amp or head unit, but I'm not sure how the speaker portions of the harness should be wired, if at all. In all my other installs I've just run RCA's from the head unit to the amp, but I'm not so sure I can do that here. This is for 3rd gen. Anyone have any diagrams for this scenario?

budjb · Nov 26, 2018

Got an answer in another forum and just thought I'd share it in case anyone else needs it:

when you're installing an aftermarket amp you will connect it like you normally do, rca's from the radio go to aftermarket amp, the amp outputs go to the speakers. The radio speaker wire outputs get tapped up and not used.
now you do have to make sure when you flash the Maestro unit that you still select the radio trim that has JBL however in the OEM Systems to be retained section you want to uncheck the Factory Amp, this way we know that you are not using the JBL amp.

AS for your door chimes, they will continue to work like normal.
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Maestro wiring diagram for aftermarket head unit and amp

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Maestro wiring diagram for aftermarket head unit and amp

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