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Adding Steering Wheel Controls

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Old Oct 7, 2008 | 08:20 PM
  #21  
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Thanks for checking this out. I was interested but not for what looks to be a lot of work.
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Old Oct 8, 2008 | 02:14 PM
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Thanks from me as well! I do not have the skills to do this ... let alone be willing to spend lots of money for something I don't REALLY need. Now, new wheels? That is a different issue and I DO need wheels.
Thanks again for the good (?) info!
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Old Oct 9, 2008 | 01:50 AM
  #23  
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Originally Posted by dkrhardy
Thanks from me as well! I do not have the skills to do this ... let alone be willing to spend lots of money for something I don't REALLY need. Now, new wheels? That is a different issue and I DO need wheels.
Thanks again for the good (?) info!

yep, forget that!
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Old Oct 9, 2008 | 08:03 AM
  #24  
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Originally Posted by GMautotech
I don’t know about knowledgeable, but I did find some answers today. I decided to use my car as a guinea pig, and it was slow at work today. I can say that this IS POSSIBLE but it’s more work than I thought it would be. Of course you will need a new coil assembly at the top of the steering column and switch. But the radio switch bezel is not available separate from the steering wheel. And the wiring harness from the switch to the steering column coil can only be acquired with the steering wheel too. The vehicle harness from the radio to the steering column does NOT contain the 2 circuits needed for the switch. Some terminals would be needed and 2 wires run to the radio along with running a lamp dimming circuit to the column.

The radio will not make use of the new switch inputs until it’s reconfigured. The base U66 option with a Delco amplifier will not work. The premium U65 using a Bose amp will work. Using a Tech2 I had to change the option configuration in the radio from the U66 to the U65 and then the switches worked. I don’t know what issues there could be from telling the radio it’s using a Bose amp when it’s actually a Delco? But everything seems to work ok. I have a feeling some of the difference is with the EQ settings. I know Bose likes to use their own presets programmed into their amps.

Now I just need to decide if I want to spend the $$$ on a new steering wheel…
wow, great post and information!!!!!
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Old Oct 16, 2008 | 10:20 AM
  #25  
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Does anyone have 07 and up service manual pic to compare the contact area behind the horn pad. I still plan on doing this to my 06 as the 8120 radio buttons are very difficult to use because of their size. also if you tilt the screen down you can't use them.
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Old Oct 16, 2008 | 10:46 AM
  #26  
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Originally Posted by spdmn75
Does anyone have 07 and up service manual pic to compare the contact area behind the horn pad. I still plan on doing this to my 06 as the 8120 radio buttons are very difficult to use because of their size. also if you tilt the screen down you can't use them.
What exactly do you mean "contact area behind the horn pad"? I have a 2007 wheel here, and might be able to answer your question.

I'm prepping to do the SWC retrofit on my 2006 3LT, and GMautotech's info has been quite valuable.

I've got the 2007 steering wheel w/controls here already, and I've got the 2007 coil/clockspring on order.

When I get it together, I'll document and photo everything.
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Old Oct 16, 2008 | 12:43 PM
  #27  
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Thanks for your help. I'm getting ready to go back to Iraq and cannot work on this now. The area I'm talking about is usaually under the steering wheel. I'm trying to just add a 07 and up wheel with buttons for the Kenwood 8120 I just put in. Thanks again.
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Old Oct 16, 2008 | 03:17 PM
  #28  
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Originally Posted by spdmn75
Thanks for your help. I'm getting ready to go back to Iraq and cannot work on this now. The area I'm talking about is usaually under the steering wheel. I'm trying to just add a 07 and up wheel with buttons for the Kenwood 8120 I just put in. Thanks again.
Here's what I've got so far:
(pictured steering wheel is for a 2007 Corvette manual transmission car, so the wiring for the auto-trans paddle shifters is not present)

I'll document more as I get into the retrofit.
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Last edited by Kent1999; Oct 16, 2008 at 03:22 PM.
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Old Oct 16, 2008 | 07:59 PM
  #29  
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wow that was quick. maybe we can finally figure out what all is involed with the swap.
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Old Oct 16, 2008 | 08:18 PM
  #30  
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Originally Posted by spdmn75
Thanks for your help. I'm getting ready to go back to Iraq and cannot work on this now. The area I'm talking about is usaually under the steering wheel. I'm trying to just add a 07 and up wheel with buttons for the Kenwood 8120 I just put in. Thanks again.
I think you might have a hard time adapting the OEM steering wheel controls to the Kenwood system. The 5 OEM steering wheel switches are not individual 'on-off' switches, but rather just 5 switches on a simple two wire circuit. Each of the steering wheel switches just connects a different sequence of resistors to that simple two wire circuit. The radio sends a control voltage to the steering wheel switch on the control wire, and when it reads voltage/current on the return wire, it cross-refs/maps it to the 5 different steering wheel functions.

I don't know if Kenwood uses the same 'resistance' system, but it seems unlikely that even if it did, the values it looks for would map properly to Kenwoods own functions.

Cheers,
Kent
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Old Oct 16, 2008 | 10:10 PM
  #31  
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I got the radio control install completed today. If I had to do it over again I probably wouldn’t bother. Doing it the cheapest way was a bit of a pain. To do it right and make it easier you need to buy a whole new steering wheel. I did not, I used an HHR right side steering wheel spoke cover that had to be modified to fit and reused the left side cover. But the colors didn’t match so I painted them both with a metallic charcoal that is close enough to the rest of the IP trim.

I am guessing to do this conversion with a new steering wheel, coil and switch would cost about $300-350 for parts, plus the install and/or having a dealer change the options in the radio (refer to my earlier post).


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Old Oct 16, 2008 | 10:31 PM
  #32  
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Can this be done with an 06?
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Old Oct 17, 2008 | 11:41 PM
  #33  
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do you have any part numbers or descriptions? also does anyone have a pic of the column with the wheel off to see how they match up?
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Old Oct 18, 2008 | 11:51 PM
  #34  
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Anyone have a 07+ service manual handy they could post the steering wheel button schematic?
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Old Oct 19, 2008 | 10:36 AM
  #35  
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The HHR right side cover is 15234337
C6 radio control 15942358
C6 steering wheel coil 19153097

A wiring harness would need to be made from the radio switches to the steering wheel coil. I do not know if a harness is available from another model, I did not look into that. Don't forget that the wiring needs to be installed from the other side of the coil to the radio also.

And yes the 06 can be converted too.


This is the stock cover in place

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This is the HHR cover sitting in place. A hole has to be drilled through the switch and steering wheel frame to mount it. That's not done in this pic.

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Old Oct 19, 2008 | 11:26 AM
  #36  
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Thanks again for the help. I know there were others interested in this addition.
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Old Oct 22, 2008 | 05:32 AM
  #37  
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Will the 06 radio be compatable with the controls or will I need an 07?
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Old Oct 22, 2008 | 06:40 PM
  #38  
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It should work, you might need to have the options changed in the radio though.
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Old Oct 22, 2008 | 08:52 PM
  #39  
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Originally Posted by GMautotech
It should work, you might need to have the options changed in the radio though.
To connect to the radio what will I need? I have never removed the radio so what am I looking for to connect? Are there pins that are marked? As long as my radio will work this will be a winter project.
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Old Oct 23, 2008 | 09:44 AM
  #40  
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I'm not sure that the 06 models have this option. It is most likely part of the radio wiring harness plug
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