can shield

Using Arduino Networking, Protocols, and Devices
1

I
I would like to understand how can shield is plugged to the car in this video
http://www.skpang.co.uk/blog/archives/55

is it the OBDII cable which is connected to the car ? and how ? in any wire from the car ?

Thanks

2

yes it's connected trough the OBDII cable. All new cars have this connector but older might not have

3

From the same site:
http://www.skpang.co.uk/catalog/obdii-to-db9f-odii-cable-18m-p-654.html