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[sev]

interesting.  What is the telematics, and how would you know if your car has it installed?

Is it anything to do with the phone prewiring? as I have the extra ariel on the roof, and the tunnel plastic has drill holes for what looks like a phone cradle of some description.

[TheBoy]

i would be most interested in the guide when done tb. Where you siteing it? In the old cd changer cuby hole?

I reckon I may just be able to squeeze telematics and CDC3 in to the BOSE amp shelf, hence not really 'wasting' the space so much.  Might need a spare shelf to practice on though.

That would free up the cubby hole for general junk, and obviously the space taken up with the Carin unit would be freed as well, as the Carin would no longer be needed...

[TheBoy]

interesting.  What is the telematics, and how would you know if your car has it installed?

Is it anything to do with the phone prewiring? as I have the extra ariel on the roof, and the tunnel plastic has drill holes for what looks like a phone cradle of some description.

No prefacelift has this type of telematics unit, facelifts only.  Some earlier cars had a phone option, but very rare.  ccrt700 had telematics in headunit (well, bolted on back).

Many Omegas are prewired, irrespective of telematics

[sev]

Thanks TB  

so what are the advantages of telematics as opposed to say the head unit with the sim card slot (don't know which one it is) or an install like a nokia?

I agree about the whole bluetooth thing, in that compatibility will always be a compromise, and of course the look of the car is going to get compromised with all the little screens and cables everywhere.

Mine has phone pre-wiring, but I take it that this is totally different to having a phone option?

[TheBoy]

Thanks TB  

so what are the advantages of telematics as opposed to say the head unit with the sim card slot (don't know which one it is) or an install like a nokia?

I agree about the whole bluetooth thing, in that compatibility will always be a compromise, and of course the look of the car is going to get compromised with all the little screens and cables everywhere.

Mine has phone pre-wiring, but I take it that this is totally different to having a phone option?

No advantage over ccrt700 from phone point of view. Its just my chosen headunit has a seperate telematics rather than built in...

[TheBoy]

Pic of Mic and wiring.  3 wires, only 2 connected...

[Marks DTM Calib]

At first glance (I would need to check) that wiring looks different to mine as on mine the black wire (an extension of the cable shield) is connected to an un-used pin.....

[TheBoy]

At first glance (I would need to check) that wiring looks different to mine as on mine the black wire (an extension of the cable shield) is connected to an un-used pin.....

The wiring on my bit of Mic loom (from a 1999 car fitted with CCRT700):

Pin1: Blue/Red
Pin2: Black (which looks like sheilding)
Pin3: Green/something
Ping4: N/C

As you can see, my mic is wired to pins 2 and 3.  Wiring diags suggest facelifts (or at least 2002 on) wired across 1 and 2.


Would this suggest a different mic?

[Marks DTM Calib]

Possibly



The above also shows that for a telematics setup that both pins of the mic are wired directly to the telematics unit without grounding any pins!

So ensure this is the case as a first port of call!

[TheBoy]

Possibly



The above also shows that for a telematics setup that both pins of the mic are wired directly to the telematics unit without grounding any pins!

So ensure this is the case as a first port of call!

To test, I have wired mic up to a short length (6") cable from telematics plug, using the signal pins 1 and 17.  Pin 2 of telematics (shielding) is disconnected.

At normal speech levels, remote party can't hear me if I'm more than 6" from Mic.


My mic is wired across pins 2 and 3 of mic connector, rather than 1 and 2, as my mic has no connection to pin 1.

[Dave DND]

Not sure if this helps or not, as unsure about vauxhall Mics, but in the aftermarket world there are many different types of phone mic, and although virtually all of them have the same 3.5mm jack plug, they often have different impedances resulting in different levels of voice - sounds like a similar problem you are experiencing by having to shout at the mic ?