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[Valentin]

Hi everybody,

I use the Omega for long journeys and even if I already managed to trick the HU to wire a jack on the CD changer channels, I'm still searching for a better user experience when it comes to "manipulate" the sound or receive phone calls. The sound is really very good for a non amplified system, an enhanced system with small amplifier and sub would complete the experience perfectly.

The car has the genuine Philips SC804 fitted. This HU has a rotative knob for the volume and it works with an "absolute orientation". I mean, the knob has a total stroke with a physical min and a physical max. Means that it cannot be used with steering wheel controls.

Now, 3 points :

- is the 96 MV6 wired ready for the steering wheel controls? If not, is it feasible to recreate the loom and retrofit a wheel ?

- the controls work with other genuine HU than the Philips SC804, I won't use a genuine HU anymore.

- the targeted HU is the Blaupunkt Skagen 400 DAB, which is ready for steering wheel controls. How can it be controlled ? Do the wheel buttons act over the MID to speak with the HU ? Do I need the 2nd gen MID ?

At the end... Is it feasible without Tech1/2 or is it a complete mess to work out ?

[Doctor Gollum]

The wiring diagrams in Haynes will be a useful guide re the wiring for the radio set up.

[Valentin]

I can't find anything about SWC in the Haynes. Should be at diagram 1000 to 1099 but I guess the L to T registration (94 to 99 models) doesn't mention any SWC as they use early diagrams

By the way, I apology because I found several topics talking about that in the forum. My first research didn't got any info but I might made a mistake in the spelling 

The User Manual for the Skagen 400 DAB do mention the way it learns the commands : different resistive values for each button. But Blaupunkt doesn't give any info about how to connect the car loom to their SWC connector

[TheBoy]

There will be no pre-wiring for steering wheel controls on a pre 1998 model.  Of course it can be retro fitted, will need a new wheel with buttons, a new contactor unit (the old one wont have enough connections), and some wiring from contactor to headunit (or to an adapter module if going with aftermarket HU). As DG says, the Haynes manual will be useful for the wiring between HU and contactor - look at the diagrams for what Haynes calls Later Models.


If going aftermarket HU, make sure there is a steering wheel adapter module compatible with Omegas (will prob also support similar age Vauxhall/Opel like Astra-G), new HU with all the gimmicks in now often don't support older steering wheel setups, but your mileage my vary.

MFL HUs will fit with some wiring, FL ones physically wont.  But no Omega HU is going to support DAB, or have a navigation map new enough to be useful - the NCDR series last map was 2008.

[TheBoy]

I think our posts crossed in the ether.

If your chosen HU has no info and the company aren't helpful, perhaps look at a different HU

[Valentin]

Ooooh my bad I didn't see the Later Models at the end of the Haynes

Ok it's very helpful, there are only 3 wires, one to the ground, the two others to the radio. The Blaupunkt Skagen is SWC compatible with the analogic system of different resistive variations, I guess that their connector only uses 2 terminals. They say on the user manual :

"The programmable SWC interface on this device includes analog steering wheel presets. The device works with analogue remote controls that controls functions through different resistance values (resistance matrix) at the connector (up to 2 control lines and 1x GND). Some remote controls are directly compatible, others require a SWC interface, like system with CAN for example."

I understood the Omega works with resistance matrix.

Then, the Skagen learns any button you choose in its menu, by activating the button on the wheel. They say : "In the VARIOUS > SWC MENU, with the right knob select the function you wish to program and confirm with the right knob. The unit will now wait for a signal from the streering wheel remote control and display PRESS KEY AT WHEEL CONTROL FOR 1SEC. Press the desired key on the wheel."

Meaning that you can program the << and >> buttons as answer the phone and hang up the phone plus volume up/down, start/pause, change source etc...

Well, I'm looking for a 98 steering wheel now

[Valentin]

Hi everyone !

Some news about this little retrofit. I found a 98' steering wheel last week, the thing arrived two days ago, I already cleaned refurbished it with ColorLock repair kit

But the interesting part is to come. I removed the original steering wheel from my car, to verify the GM code on the rotative connector or "SRS ring". The one on the car is 90507512 : it's indeed the one with 4 wires (2 yellow and yellow/white for the airbag, and 2 brown and brown white for the horn's buttons)


Then made some research about the one wired for radio control, it's 90507514 which has 6 wires.

BUT The car's loom that's plugged at the back of my 90507512 SRS ring has 6 wires. And all those wires colors match with the later model Omega.
You can see :
pin 1 = Brown (ground)
pin 2 = Brown/White (horn)
pin 3 = Red/White (radio control+ ?)
pin 4 = Blue/Red (radio control- ?)
pin 7 = Yellow/White (airbag to unit control)
pin 8 = Yellow (airbag to unit control)


It's as described on the Later Models diagram


And not corresponding the Early Models diagram, as there are only 4 wires coming out of the U20 (U20 is the SRS ring on both diagrams):


Now I must check where the two Red/White and Blue/Red go, should be at the back of the HU but pined to something non attributed on the radio while this HU is not compatible.
Opel already had pre wired car loom for this feature maybe from a certain year and month.

[Valentin]

Steering wheel remote control installed with success

All the information above are right, that 96 MV6 was pre-wired for the SWC and it's never been modified by the previous owner. The wire that serves as remote wire for the 6 buttons was connected to the "anti-theft gnd" at the back of the original Philips SC804 radio, but was connected to nothing at the back of the wheel, because of the 4 wires SRS ring.

Here is what is needed :

- Find a 98 steering wheel
- Find a 6 wires SRS ring (the one I found is from a Vectra B)
- Buy a Connects2 CTSOP001.2 even if it's not mentioned for Omega before 98
- Buy a patch lead Ctmultilead.2





Then you need to remove the steering wheel, replace the SRS ring with the 6 wires one. I found out the airbag from the 98 model had a different connector. I ordered a SRS ring which fit my original airbag, I modified the PUR material of the airbag cover to fit the buttons, and I put back the original airbag, being sure the connection (orange connector) and any electrical specification could stay the same as before.

Then cut or disconnect the colored wires you don't need on the patch lead, for JVC you keep the orange one as described in the technical note. Next, you need to connect the SWC from the aftermarket radio to the "key1" of the patch lead, connect the GND from the patch lead to any of the gnd behind the radio. This is the only cut I had to make (I cut the small gnd of the Connects2 loom to avoid cutting the car loom).

Put back in place the airbag (needed a lot of rework with the Dremel and scalpel), connect the ISO connector to the car, and enjoy.

I will maybe upgrade this installation to something programmable in the future, because the 6th button on the left hand side does nothing, as said on the technical note delivered with the Connects2 device.















Hope it will help anybody who wants to retrofit this feature, I'm sure it's quite easy even when the car is not pre-wired

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