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Discussion Starter #1
I have a 2010 RGC, 2 speakers and oem radio. I want to added a 4 channel amp to run the dash speakers and 2 6x9s. The amp is SoundStream Stealth series. It is 7.5" x 11.5" x 2" and will be mounted in the saddlebag. The amp has speaker level inputs and I want to use them. Sooo...

I have not seen how the radio harness looks like. I know that I have the front speaker wires, but are the rear speaker wires also on the harness? Or do I have to connect directly to the pins on the back of the radio. If so, which pins?

If the harness has the wires, I can find left and right, - and + by testing with a speaker. But if someone knows the color code that would be a great help.

I also understand that there is no fade without a flash, I am okay with that.

Thanks
 

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You wont need to worry about the rear outputs from the stereo. there should be a 2/4 ch mode switch on the amp . put it in 2 ch mode and it will parallel the rear channels internally in the amp .

I assume your using a stl4500 that amp has an 80amp draw which will drastically limit the battery life on the bike. you will need to charge the battery every time you park it.
 

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Discussion Starter #3 (Edited)
Thanks for the reply. Yes, it is the STL4.500. I will make it a habit to keep the bike on a charger when parked.

Will the source input for the SoundStream amp come off the Harley amp? If so, is there a harness to splice into for the rear channels or just the bare pins/sockets on the amp?

Are the output levels coming out of the Harley amp high or low. If they are low, I will just splice them into RCA and plug that into the Soundstream no need for the speaker level inputs.

Prior to making this thread, the only info I come across aftermarket amps for Harleys are from companies that include a plug and play harness. Even after reading those threads I can't figure out where the input for the aftermarket amp comes from, the amp or the radio.

Thanks again for any input.
 

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the amp is a chipset inside the radio . what we usually do is grab the leads off the front speakers and put them to the front input on the amp then back out to the new faring speakers and whatever other speaker we do either in the bags or inside the faring. just make sure the amp switch is on 2 ch mode.
 

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The HK rear speaker pin outs are accessible in the unused 35 wire receptacle on the back of the radio. That receptacle is unused on all fairing model Touring bikes as delivered by HD except the Ultras
pin #1, right rear +
pin #2, left rear +
pin #24, right rear -
pin #25, left rear -

A lot of good info here.

http://roadglide.org/showthread.php?t=4741
 

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Discussion Starter #6
Thanks for the pinout for the rear speakers, I also saw the thread about the 35pin radio harness plug and that the dealer should have the pins.
 

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you can use that harness if you want but with that amp there is no reason to spend the $ on it . just flip the switch to the 2 ch input and it splits it internally to 4 ch plus its less wires to run
 

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I have a Alpine KTP 445 AMP. I am basically trying to install the same thing (6x9s) in my saddlebags. The amp should be plug and play, but no connections on the radio.

Is a wire harness required for this? Do I need a converter?

Any help would be great!!!
 

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In my first audio install, I ran Alpine CDA-117head unit, with Alpine KTP-445, on my 2011 RGC. I just bought the plug and play from HawgWire for Alpine units. I then ran speaker wires to the front, under tank, and through fairing opening. T-tapped wires, which simplified the hook up. Now I have totally upgraded my music set up,will post photos soon.
 
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