After looking at the chart below, I was wondering if it is possible to add a shock or motion sensor to the horn trigger wire. The reason why I ask is I did on my previous car (01 GTI), and it worked great. It was no Viper or Clifford setup, but it worked flawlessly, and only set me back about $35 for a DEI two stage motion sensor. But I am not sure if it would work the same on the tC. Any input would be appreciated.