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OGM1 with covert medialink install

NCSierra

By NCSierra
in Audio, Electronics & Software

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NCSierra Enthusiast

NCSierra

Posted
Posted

Here are some links to information and parts that I used to jumper the OGM1 medialink to the factory usb, move it to the upper glovebox, and separately mount a jumpered aux connection that retains ipod video while hiding the medialink pod inside the dash. I spent a lot of time researching options to cleanly mount the medialink, but really wanted my truck to look as stock as possible and I did not care for the look of the medialink pod.

 

Now my truck stays clean because there are no wires for gps, phone, ipod, etc from the dash. The ipod is hidden and my phone charger is powered from the socket under the center seat.

 

Here is a pic of the finished product in the upper glovebox. The ipod touch fits perfect lying flat on the left side of the glovebox with just a mm or two to spare. I cut a piece of black drawer liner to fit the bottom of the glovebox to prevent the ipod from moving at all.

 

Connections in upper glovebox

Truck001.jpg

 

With jlink cable attached

Truck006.jpg

 

Here is a list of the parts that I ordered:

  1. OEM 12v outlet – part# 25774623
  2. OEM 12v outlet cover – part# 20983936
  3. Female to female 4-pole connector - http://www.krp.com/4...JACK_p_112.html
  4. Male to male 4-pole 3.5mm cable - http://www.krp.com/4...BLE_p_1017.html
  5. USB adapter to attach factory cable to medialink - http://www.krp.com/U...ALE_p_2230.html

 

Thanks to Walt, he is a wealth of information:

http://www.gm-trucks...c=131925&st=150

Link to instructions for moving the factory usb:

http://www.gmfullsiz...ad.php?t=219200

 

***Disclaimer… this setup does work for ipod video and I am satisfied. However, I found that the video will drop out momentarily if I manipulate the aux connection at all while the video is playing. I attribute this to a loose connection, but do not know if the jumper harness, the jlink, or the female to female connector is at fault.

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RAK80 Enthusiast

RAK80

Posted
Posted

Thanks so much for this! You've made my week! Excellent work and write up! I will be getting parts ordered tomorrow!

parshal Enthusiast

parshal

Posted
Posted

I found a picture of a factory USB and aux port on a corvette forum. The part number they gave is 20870101. There is also a picture of it. It's a flush mount rectangular module that would look perfect in this location. Did you look at that part?

 

Here's a link to a thread with pics. It looks like the part may now only be available in white due to a vendor change.

 

http://forums.corvetteforum.com/c6-corvette-general-discussion/2636199-new-usb-nav-replace-instead-of-pal.html

NCSierra Enthusiast

NCSierra

Posted
  • Author
Posted

I found a picture of a factory USB and aux port on a corvette forum. The part number they gave is 20870101. There is also a picture of it. It's a flush mount rectangular module that would look perfect in this location. Did you look at that part?

 

 

I think I saw the part you are talking about... similar to this link?

http://www.chevroletmanuals.net/chevrolet-986.html

 

Did not jump on this part because the aux needs to be a 4-pole (3 stripes on the 3.5mm jack). Since this aux connection is made for audio pass-through, I believe the conductor would be in the wrong position.

parshal Enthusiast

parshal

Posted
Posted

Just edited my post and saw yours. What your saying makes sense. I wonder if there's a way to get the proper aux jack fitted in to that adapter. I like that module look better than the round one but I certainly likd the location of yours.

NCSierra Enthusiast

NCSierra

Posted
  • Author
Posted

I actually tried spraying that connector with plasti-dip to conceal it better in the glovebox but the application did not come out very clean so I removed it :D

RAK80 Enthusiast

RAK80

Posted
Posted

I actually tried spraying that connector with plasti-dip to conceal it better in the glovebox but the application did not come out very clean so I removed it :D

 

 

Lol, well either way it definitely looks much better than the media link taped to the dash somewhere! Not to mention a second 12 volt outlet on the dash

parshal Enthusiast

parshal

Posted
Posted

Looks like this might be an option if you don't mind soldering. Get the snap in jack and the six foot cable and you can shorten the cable to a few inches to save space behind the glove box.

 

http://www.minute-man.com/acatalog/4_Conductor_3_5mm_Plugs_and_Jacks.html

 

or just a black plug:

 

http://www.markertek.com/Connectors-Adapters/Audio-Connectors/3-5-2-5mm-Mini-Connectors/Calrad-Electronics/30-712.xhtml?30-712-BK

wottenad Enthusiast

wottenad

Posted
Posted
I found a picture of a factory USB and aux port on a corvette forum. The part number they gave is 20870101. There is also a picture of it. It's a flush mount rectangular module that would look perfect in this location. Did you look at that part?
I think I saw the part you are talking about... similar to this link? http://www.chevroletmanuals.net/chevrolet-986.html Did not jump on this part because the aux needs to be a 4-pole (3 stripes on the 3.5mm jack). Since this aux connection is made for audio pass-through, I believe the conductor would be in the wrong position.

 

After reading a couple of the links above, I took a look at the schematic for the Camaro USB/AUX jack:

 

2duas4.jpg

 

It's got a total of five pins in the plug - 1,2,3 & 5 are audio left, audio right, audio ground and AUX detection respectively. Audio outs are straightforward, and AUX detection is just passing a ground signal to the deck to tell it when there's a plug inserted so the deck knows to let you choose "AUX" as a source (100% certain it's connecting pin 3 with pin 5 when the plug's inserted).

 

What intrigues me is that there are a total of two pins that would not be used in a "hacked" non-GM installation using this plug: pins 4 & 5. Pin 5 "could" be used for video ground (since the audio and video grounds are commoned in the plug anyway), so all we need is to see whether pin 4 corresponds to the fourth ring on the 3.5mm male plug. It almost wouldn't make sense for GM to source a non-standard plug to use in this case (I know - it's GM...), so with a little rewiring on the back side of this factory jack, we could potentially get everything you'd need to make it work.

parshal Enthusiast

parshal

Posted
Posted

Great news Walt!

 

Just got off the phone with my local dealer. He said that item in black is item number 25832461. He can have it it 5-7 days for just under $20.

wottenad Enthusiast

wottenad

Posted
Posted

Great news Walt!

 

Just got off the phone with my local dealer. He said that item in black is item number 25832461. He can have it it 5-7 days for just under $20.

 

 

Might be worth it to find out, huh?

parshal Enthusiast

parshal

Posted
Posted

Already on order. Worst case, I drill out the aux port and put one of the snap-in 4 pole connectors I referenced earlier.

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