Thread: How-To: Install an Aftermarket Stereo
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Old Aug 23, 2007 | 10:28 PM
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marauderroy
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From: Texas (N. of San Antonio)
Default Re: How-To: Install an Aftermarket Stereo
Originally Posted by NeverEnough
Ok, not to sound stupid, but I've searched every which way by sunday and under YOUR user name and can't find this mysterious post you mention about how to run my Clarion's 5 Volt RCA outs to the factory amp...

I want to be able to control the subs independently from the fronts. Could you please post a link?

I have one of these from a previous installation in a Celica with the factory JBL amp. It allowed me to run my Clarion RCA Outputs into the JBL amp. I would guess this would work, just need to know how to wire it.
You will have to run new wires to your fronts or your subs and add an amp to have control of the subs independently. The stock set up only has two (left/right) sets of wires to the factory amp. The amp sends the lows to the rear (subs) and everything else to the front (door) speakers. You can use the speaker level front outputs of your "new" head unit to the factory amp for the door speakers and install an amp and sub in the rear if you need DEEP base. Install you new head unit, Use the speaker level outputs and check out how it sounds. An aftermarket head unit will make the stock amp/speakers sound MUCH better than the stock head unit.
 
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