What kind of speakers are the stock rear speakers? Crutchfield says they are 6 3/4" speakers, but from the service guide it looks like they are wired with both a + and - signal pair AND a voltage/ground pair. Do they have some kind of amplifier built into them? Are there any after market speakers that would fit here?

If I were to install a new head unit, would it be as simple as bypassing the factory amp and sending the rear speaker outputs on the new head unit to the new rear speakers?

I understand that the factory amp still needs to be there even if you aren't using it any more because of the other sensors that are on board.

 

Most of your questions have been answered in messages here - I'd refer you to the messages but maybe if you try the search they might pop up.

You are correct about the rear speakers - both signal and power leads to them. There's a really good thread on that which is, I believe, this message: https://www.crossfireforum.org/forum...ead.php?t=9308

As for the factory amp and speakers, you have many options.

I wired my aftermarket head unit into the car using a harness connector that goes onto the aftermarket head unit.

Then for my mid and high-range rear speakers I used the aftermarket head-unit speaker-level outputs. For my sub, I used the aftermarket head-unit sub-output.

The sub has an integrated amp so I also connected the remote power on lead from the aftermarket head unit.

I left the factory amp to power the front and rear factory speakers. They all run out of the "front" channel of the aftermarket (and factory) head unit so I can do front and rear balance.

The side door speakers benefit from installing a crossover which is also covered here though many aftermarket head units have high-pass filters settings that can be used to accomplish much the same thing if you isolate those speakers in your wiring plan.


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