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Need Help installing dnx8120

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Old Dec 18, 2009 | 09:09 PM
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Default Need Help installing dnx8120

I am installing Kenwood dnx8120 in my 2005 bose, no onstar.
i have gmco.
i don't know which wires i hook up. for sound.

Last edited by reddoor123; Dec 18, 2009 at 10:36 PM.
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Old Dec 18, 2009 | 11:43 PM
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If you have bose, then the harness should come with RCA connections that you plug into your pre-outs on the kenwood. Make sure on the harness you turn on the amp by hooking up the blue/white wire on the deck to the harness
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Old Dec 19, 2009 | 12:49 AM
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Problem my unit is used and there is no blue white wire. can i put a wire in there or do i have to get a new 22 wire harness for kenwood.
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Old Dec 19, 2009 | 04:57 AM
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The GMCO has yellow and black wires coming out of the plug, they are the battery and ground wires for the yellow and black wires of the 8120.

The red wire coming out of the GMCO box unit is the switched power wire that connects to the red power wire of the 8120.

The blue/white wire coming out of the 8120 connects to the blue wire at pin B3 of the GMCO.

The 8120 has female RCA plugs for the line level outputs that connect to the male RCA plugs coming out of the GMCO connector.

Connecting those wires will get you working. If you're missing any you probably need to get a new harness for the 8120 unless you can find info on where to put a new wire.

The other wires on the 8120 don't have to be connected, but if you want to you can connect the orange/white dimmer control wire coming out of the 8120 to the car at the TC/AH button. Connect it to the GRAY wire under the button.

You can click here for the 8120 manual.

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Old Dec 21, 2009 | 02:46 AM
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got it working and it is great.
only thing is i don't know how to get this to control my wild to mild exhaust valves help please.
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Old Dec 21, 2009 | 07:52 AM
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Originally Posted by reddoor123
got it working and it is great.
only thing is i don't know how to get this to control my wild to mild exhaust valves help please.
The NPP control on my 8120 works great. Follow the instructions here:
http://www.dfwcorvettes.com/dnx8120install.asp
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Old Dec 23, 2009 | 03:06 AM
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I don't have the fuse for the exhaust, i am using the npp in a box . http://www.nakidparts.com/id78.html
how do i get this to work (someone)
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Old Dec 23, 2009 | 08:21 AM
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you should still have a fuse there
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Old Dec 25, 2009 | 12:58 AM
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2 more problems:

1. Whenever i eject a dvd or adjust the screen it rubs and will not move without some force.

2. Whenever i touch the screen there is no beeping noising and yes it is turned on.
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Old Dec 25, 2009 | 10:47 AM
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Originally Posted by reddoor123
2 more problems:

1. Whenever i eject a dvd or adjust the screen it rubs and will not move without some force.

2. Whenever i touch the screen there is no beeping noising and yes it is turned on.
1) Light silicone spray in the screen tracks should solve it.
2) Select "On" for the Beep option on the System Setup Menu.
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Old Dec 25, 2009 | 06:01 PM
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2. It is turned on.
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Old Dec 27, 2009 | 06:26 PM
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I am glad I ran across this thread I also have the 8120 and love it also does anyone know how to program it for the Garage door opener I lost one and have to switch it from vette to truck and it would be nice to program stereo to do it TIA to the person that can help me



Dale
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Old Dec 27, 2009 | 06:46 PM
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you physically need an extra garage opener to do it
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Old Dec 27, 2009 | 06:47 PM
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as far as beeps this could be totally wrong just throwing it out there, i seems to recall on some headunit, quite possiably this one, the beeps only came over the speaker level outputs not the rca outputs
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Old Dec 27, 2009 | 08:01 PM
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Originally Posted by pentavolvo
as far as beeps this could be totally wrong just throwing it out there, i seems to recall on some headunit, quite possiably this one, the beeps only came over the speaker level outputs not the rca outputs
that is what i was thinking.
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Old Dec 27, 2009 | 08:03 PM
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Originally Posted by pentavolvo
you should still have a fuse there
even if i have a 05 vette, that i put the exhaust on myself, (cut and welded on).
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Old Dec 27, 2009 | 09:50 PM
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Originally Posted by reddoor123
I don't have the fuse for the exhaust, i am using the npp in a box . http://www.nakidparts.com/id78.html
how do i get this to work (someone)
Originally Posted by reddoor123
even if i have a 05 vette, that i put the exhaust on myself, (cut and welded on).
The NPP uses an external 12v supply to control the exhaust. Get yourself a 12v automotive relay (under $10 at Radio Shack). Connect one of the remote leads from the 8120 to one of the coil pins on the relay, connect the other coil pin to ground (coil pins are usually 85/86).

Connect battery constant power (or whatever supplies your MTW gizmo now) to one of the relay switch pins (30/87), connect the other switch pin to whatever wire controls the exhaust valve solenoid.

Set the 8120 to supply a constant 12v when you turn on the external control. That 12v (very low current) will close the switch inside the relay, allowing the higher current 12v from the battery to control your exhaust.

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