Hi all, I have just purchased a used 2013 MY14 SV6. I am going to get a towbar put on it, but am undecided if I should get it done by the dealer or by a aftermarket local. I am unsure because the aftermarket guy tells me I need to have a Canbus module fitted to the wiring harness, however the dealer knows nothing of the sort. Can anyone here clarify? Cheers, Dave.