I connect using a generic bluetooth ELM327 adaptor from eBay. Torque will run via bluetooth, no cables required. I did modify mine to include an on/off switch as generally it requires to be unjacked and re-inserted to sync up to the X5's ECU's. I leave it in situ all the time.

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Neil

2016 X5 3.0D
2009 X3 3.0D
2005 X5 3.0 Diesel Sport (sold)
2007 320i (sold)