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Is there a link to the wire harness layout, (where/how they run), on 2008 Civic EX Cpe. audio system, and other wire harness's, layout.?

I have found wiring diagrams, bare wires and connectors... but not the layout of where and how the wrapped harness runs form the audio system to the rear trunck-deck area.

Lost rear audio, perhaps while Honda was trouble shooting a battery drain issue, but not for sure... they were unplugging everything.. Need, want, to do some trouble shooting..

 
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Also - Trying to find where the crossover for the Tweeters are in the front stage of the Premium Sound system...('08 Civic Ex, Coupe) is located.

The Amp has no, (from wire diagrams I have found), Tweeter outputs, only FR/FL/RR/RL + Sub.. 5 channels.
The Tweeters, at least in my car, does not have a capacitor on the Tweeter, and the Door Speakers do not have an Inductor (coil) attached.

 
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I'm not sure what's different about the premium sound system but tweeters usually run off the front left/right speaker outputs. I don't know where the actual splice is.

 
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I'm not sure either, thats part of the problem... I'm guessing the Tweeters are powered/driven from the Front Right/Left channel out puts, as all the diagrams of the HeadUnit & Amplifier only show connection/pins for FR/FL/RR/RL & SubWoofer.

Thanks, The difference with Premium Sound system is that the HeadUnit is pre-amp output into an Amplifier (located in the '08 Coue) under the console forward of the gear shift lever. So for sure that wire harness is different than a non Premium Sound system. The Premium Sound system is 350 watts and has a Sub Woofer.

My original question "looking for the wire harness" information has lead me to the additional question about the crossover.

The Tweeters do not have a separate channel form the amplifier, or HU, so there must be a crossover network, even if its as simple as an inductor (low pass) and a capacitor (high pass) located somewhere, likely at the same place as the wires split off for Tweeter & the Door Speaker.

 
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I believe this is part of the tweeter itself. If yours does not have a visible cap on the back it's possible it's internal.

 
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OK Updated info gathered about tweeters. I purchased a manual, (pdf file on flea bay so content not guaranteed, but looks official)), and it has showing block wiring diagrams, alomg with connector pinouts...

In these drawings the Premium Sound ('08 2dr Coupe) system does actually have 7 separate outputs, separate wires to the Tweeters.. R/L Tweet, R/L Door, R/L Rear Deck, and SubWoofer..

This being the case, (as I have red in another other post), the crossover may in fact be done in the amplifier. Could explain why there is no capacitor on the Tweeter.
You could simply replace the Door & Tweeters with a matched set and connect them directly to the wiring.. they may not sound ideal, depending on the speakers design, but should work with some protection to the tweeter being built into the amplifier.