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21 posts


#152012 13-Sep-2014 07:51
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Hi All,

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.


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  #1127639 13-Sep-2014 07:55
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it always helps when you include details like make/model/year of car and information about the head unit


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  #1127641 13-Sep-2014 08:05
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Headunit I have not bought yet, but all of them have standard RCA pre-amp output.  

Car is honda odyssey 2003. However, not much to find on audio details on the net. I have found the pinout of the radio.



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  #1127996 13-Sep-2014 18:17

It would most likely be balanced audio. Which would have been done to stop it from picking up interference.


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  #1352868 27-Jul-2015 20:14
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A bit of a late reply but I thought I'd give a quick update.  I ended up ripping out the factory amp and running some wires from the AMP to the headunit. It' relatively short and not too hard to get to.

Works like a charm and sound really good.

Next step is hooking up the steering wheel buttons.. already tested it just have to find the time to wire it in.


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