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					Originally Posted by neiloakley  argh i think it's just clicked. The Wiring is not specific to the unit, but the car. | 
	
 Well, thats the same isn't it?
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					Originally Posted by neiloakley  SO all TCU units need the pins in the same configuration, and it need to swap the wires in my car about to match the configuration required by the TCU | 
	
 The only difference in TCUs is whether they are ECE or US models.
ECE = Assist over GSM, and optional Bluetooth cordless handset in the car.
US  = Assist over CDMA, and no optional Bluetooth cordless handset in the car.
But the wiring (power, ground, ibus, microphone, audio) is identical.
 
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					Originally Posted by neiloakley  Which TCU i get doesn't matter, as long as i have rewired my connect for a TCU moduel correct? | 
	
 As I said earlier: "simply change the BIT-II wiring to the TCU wiring."
Of course, always refer to the right wiring diagram.
Do not read USA diagrams if you have a Non-US market car.
The WDS shows all, very clearly.