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What I did end up doing.
I chose to tap into the pre out signals. Now, at the time of doing this, I did not have the Honda Shop manual yet. I now have that. Got it from my dealer for $69. Pretty good deal considering the best I've seen the net was $10 more. The mechanic let me take some pictures of his manual and the wiring diagrams needed. He had to unwrap his manual as it was brand new. They are a very new dealer that opened up about 2 years ago I think . It's where I bought my F6B and they're just 2 miles or so down the road. cooldude I tried to get him to just give me his in exchange for the one I ordered, but he said he'd be in trouble if for some reason Honda were to find him without one on hand..
I removed the tail end body work and removed the OEM amplifier. The amplifier resides in an enclosure by itself behind the rear wheel. I didn't have to remove the amplifier to tap into the signals, but my intention was to put the new amplifier in it's place. The audio signals that feed the amplifier come from the "Audio Unit" located under the passenger seat in a black enclosure. This would be equivalent to what would be called the head unit in car audio terms. The controls on the fairing left side are just that. Controls. I pulled out the amplifier and made the decision to cut the wiring harness in half. The amplifier has three bundles coming from the amp to a plug that plugs into the factory wiring harness. I cut the three bundles mid way and now I had the factory plug with the wires needed. If I ,for some reason, wanted to return the bike to stock, I will have to splice and solder all those wires back together. In those wires are the speaker wires for four speakers ( the bike is wired for all four speakers even though it only has the front speakers) , the wires for the pre out signals for all 4 channels and positive power and ground. I made up a harness, thinking I'd try to use all the factory wiring. This proved unsatisfactory and I ended up only using the pre out signals. Both the factory power leads and the factory speaker wiring degrade the sound substantially. Here is a pic of the harness i first made up.
Attachment 10651
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