Is there anyway to install this TT just by connecting it to the ignition using the harness (I have an HKS TT harness). I read on here that you can ground the handbrake wire...but can I ground the other two wires that go to the ECU (O2 sensor and ground wire i believe) and not have any problems? I just want to install the TT for now and then go back and connect it up to the ECU later. Thanks.

 

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