Well its day 5 on what should have been a 1 or 2 day install on a Kenwood DNX 9140 radio and keeping factory Bose. I got all things working except the SWI-Jack, I even called there support tech. and after him trying to help me trouble shoot the problem, he suggested I bring it to a system installer, which sounds good but would cost me a ton, since I didn't buy the parts from them, so out of frustration I took it all out unsoldered the wiring harness and now going to start all over, I'm getting allot of different installs tips on which wires need to be use and which don't. If someone out there has the same setup as me and installed this unit and has it working correctly please help with the instructions on the install,
I have this car. 2008 3lt with Bose, steering wheel controls, OnStar, Automatic, What I'm trying to install is Kenwood DNX 9140, with the Peripheral GMAH24B interface, Chime module, SWI-Jack steering wheel control the newest version, and a back up camera.
Thanks
David

 

I'll PM you with my cell phone number. Call me when you get a chance and I'll try to help you throught the install. I just completed my install a couple of weeks ago and the SWI-Jack worked perfectly on the first attempt.

Frank

 

If you had everything except the steering wheel controls working, why the heck did you pull it ALL out

Reinstall everything else the way you had it.

For the SWI-Jack, connect the black SWI wire to ground, the red SWI wire to the blue/white wire coming out of the HU, then whichever color SWC wire you're supposed to use on the SWI should be spliced into the dark blue wire at pin A7 of the main radio connector. You also need to connect the blue/white wire from the HU to the purple wire at A6 of the main radio connector. That will get the SWI and steering wheel buttons powered whenever the HU is turned on.

If you're doing it this weekend, I'm stuck at work from 7am-7pm Fri/Sat/Sun, send me a PM if you want my number.

 

I installed a DNX8120 a couple of weeks ago in my C6. Same setup as you except my cars a manual. Did you download the instruction for the 07-08 C6 from the PAC website? If you follow it exactly you shouldn't have any problems. If you didn't here it is.

Current Information selected:
The information we have on a 2007-2008 Chevrolet - Corvette , has been generated below.

1. Quick description before we start wiring the SWI-JACK .
The SWI-JACK 's wire color we are going to use is Green. This is the Green wire on the SWI-JACK , not the vehicle!
The other wires on the SWI-JACK , white, yellow, orange and blue wires are not used for your Chevrolet Corvette.

This leaves you with a Red, Black and two loop wires. These wires will be discussed down below.

2. Picture of the Chevrolet Corvette plug.

The connector is viewed from the pin side not wire side.

3. Connecting the SWI-JACK 's steering wheel control input wire to vehicle plug.
# Connect the SWI-JACK 's Green wire to pin # A7 (blue) of the above connector. Connect pin # A6 (purple) to accessory +12v



4. Connecting power and ground wires.
Black wire: Connect the SWI-JACK 's black wire to chassis ground. This is usually a black wire on the aftermarket wire kit.
Red wire: Connect the SWI-JACK 's red wire to a switched +12volt wire. This is usually a red wire on the aftermarket wire kit.

5. Instructions for cutting or not cutting loop wires.
Step A: The purple loop wire does not need to be cut.
Step B: The brown loop wire does not need to be cut.

6. Programming the SWI-JACK with a version number.
The SWI-JACK has to be programmed for version # 1.
1. Press and hold the Program Button on the SWI-JACK while turning on the vehicle to the accessory position. The LED will turn on.
2. Release the Program Button and the LED will turn off.
3. Press the Program Button 1 times. Each time you press and release the Program Button, the LED will turn on and off. Once you press the Program Button 1 times, wait for 3 seconds. The LED will flash 1 times indicating it is programmed for version 1. If it flashes the wrong version number, you will have to start all over at step 1 above in this section. Turn the key off.
4. Once you have programmed the correct version number, you will not have to do these steps again. If you need to reprogram the steering wheel control, you can go directly to the next section.

7. Programming the SWI-JACK to learn steering wheel control functions.
1. Turn the key to the accessory position (you do not need to hold the Program Button at this time). The LED will flash 1 times. This indicates it is programmed for version 1.
2.

Press the Program Button until the LED turns on, then release the button (This will erase all previous learned steering wheel control functions). The SWI-JACK is now ready to learn a command from the steering wheel.
3.

The SWI-JACK must be programmed in the specific order shown in the chart below. If a function is not needed, it may be skipped. Adjust the Radio Select switch on the side of the SWI-JACK according to the chart. Alpine = 1, JVC = 2, Kenwood = 3, Clarion = 4 and Blaupunkt = 5.


Alpine

JVC

Kenwood

Clarion

Blaupunkt
Switch setting for
SWI-JACK

1

2

3

4

5
1
Volume Up Volume Up Volume Up Volume Up Volume Up
2
Volume Down Volume Down Volume Down Volume Down Volume Down
3
Mute Mute/Power Mute Mute Mute
4
Preset Up Preset Up Source

Track Up
Source
5
Preset Down Source Seek Up Track Down Track up
6
Source Seek Up Track Up Band Track down
7
Track Up Seek Down Track Down Source Disc up
8
Track Down Select Disc Up/FM Disc down
9
Power Band Disc Down/AM OK
10
Ent/Play
11
Band/Program
4. With the LED on, press your steering wheel button until the light goes out and hold for one second more.
5. Release and the LED should come back on. If it does not please double check all connections and verify for correct version programming.
6. Repeat step 4 and 5 to program additional steering wheel buttons in the order corresponding to the chart above for your SWI interface.
7. If you come across a command in the chart that your steering wheel does not have, or you do not want to program, press the Program Button on the side of the SWI interface.
8. The LED will flash once rapidly and then stay on confirming that you have successfully skipped that command and are ready for the next button.
9. When you are done programming all the buttons, wait for about 7 seconds. The LED will flash 3 times indicating it is done programming. The LED will then flash 1 times indicating the version number.


8. Testing the SWI-JACK .
1. Connect the plug to back of radio's steering wheel input jack or harness.
2. With the vehicle on, press a steering wheel button to control the stereo. The SWI-JACK should control the aftermarket stereo with the function you taught it. Test all other buttons.
3. If the interface does not control the radio as the steering wheel indicates, the buttons were either pressed in the wrong order or a step was not skipped properly. Return to category 7 and reprogram.
4. Make sure all unused wires are isolated separately.
5. After all commands are verified to work properly, secure the SWI interface so that tension will not pull either of the connectors loose or apart.
6. That's it! Enjoy!

 

Just a quick update, after talking to MI_Z06 today on the phone we went through the wiring harness per his install, I had 1 wire mismatched which was the Blue/Yellow from the SWI-Jack to the 9140 harness, I now have it tied into the Blue/Yellow wire at the 9140 harness. and also on the 2nd attempt on connecting the system back in the car the fuse to the radio popped. I also redid my connection at the A7 and A6 wires on the factory harness, programed the SWI-Jack per instructions, fired up the 9140 and presto it works the steering wheel controls are very responsive to the inputs, the cell phone calls out and receives calls .
the ipod plays DVD plays CD plays, the voice commands work also. I still need to run the Blue tooth mic, and connect the rear view camera, then tuck all that mess in. I will post picture when all that is complete.
Also once again a BIG THANKS to all that replied to my many post and PM's you all know who your are. A Big TEXAS thanks.
David

 

That's a hard core Head Unit install... I'd have paid someone for that!

 

i disagree with this whole connecting the power wire for the steering wheel controls to the remote wire from the radio, this really should be tied into accessory power, its could overdraw the remote line

 

Slightly off original post - I have a similar setup (PAC-SWI and DNX 9140). I've programmed the PAC-SWI a number of times to ensure it was done correctly. All functions (volume up/down, track up/down, etc..) work fine except that when the volume button is pressed (or pressed and held) it only advances the volume up/down by one increment.

When first installed (for a brief period of time) the volume would continue to advance up/down if the volume button was held down without releasing.

I've called PAC Tech support on two occasions with no resolution. One rep suggested I reprogram (which I did) and the other didn't have a solution/recommendation.

Obviously, the PAC-SWI is sending a volume up/down signal, so I wonder if it's an issue with the DNX 9140 interpreting the signal? I've also updated the DNX 9140 with the latest firmware 1.7.0, but the volume still only advances up/down by one increment when pressed - This causes me to have to repeatedly press the volume button to change the volume by several increments.

Any help, suggestions, observations is appreciated

 

You'll be better off starting your own thread in my opinion. I can't help you as I don't have steering wheel controls.

 

I can understand your point, but the resistance on the buttons is at least 1270 ohms (schematic), so even at 14v, if you use Ohm's Law the max current the source wire will see is under 12mA.

I can't remember if I used the HU amp wire or the switched wire coming out of the GMCO on my install, but honestly, after having my own problems with an interface adapter and reading about many more, I think I actually trust the HU to handle the load better.

Maybe a relay would be a good idea in situations where there are several things being powered by the switched wire.

On my D3 if I hold the volume button down it will initially do one increment, pause for about a second, then rapidly change until I let go or it maxed out. Every increment has it's own beep the entire way.

Occasionally, on really hot days, if I had the car parked out in the sun all day, sometimes, the volume up button won't work at all. I'm 99% sure that the resistance of the button is changed enough by the heat that the SWI doesn't see it as one of it's command resistances, so whenever I'm pushing the button it doesn't do anything. Once I let the A/C blow for a few minutes it always starts working again. Maybe the resistance of your button is right on the edgge of the band the SWI is looking for so something similar might be happening. Just a guess.

I reprogrammed my SWI a few weeks ago when I had the dash apart. It was much warmer (SC in July) than the last time I programmed it (February), so hopefully I won't be having problems on hot days any more. For the past few weeks it's been doing just fine.

 

my concern is that u are also powering the interface which will draw a bit more power. you are right it prly is fine but i have fried remote wires off of headunits before. u are right though the gmos04 is so problematic its not even funny. i always use a gmah24 or gmco

 

Its done and working great. I'm wore out.

 

You're not the only one

I hate to ask, but what is the gizmo hanging down from the trim in this pic, it almost looks like a GPS antenna

 

That's the push to talk button not really sure where I'm going to mount it.

 

Looks very clean.

How do you like that camera?

 

I have never had to empty my PM box so many times j/k

It looks like it was all worth it though. It looks great David. Enjoy!

 

Yep, Mike I wore your PM box and MarkCZ out also, thanks for all the help. Took it for a 200 mile ride today and the navigation system worked perfect, also the blue tooth, the speakers are a little weak with the Tuner, the iPod and music CD's sound great.
Thanks again
David

 

glad you got it all working