Thanks to all guys!
I was able to wire everything correctly at the end.
Have put a 7" retractable unit with WinCE and Android.
I am able to read and clean generic OBD2 error codes via Bluetooth + Torque app for more info like coolant temp. really useful as it shows real temperature not like our gauge.
Sygic 14 for GPS and radar alerts.
I still have to configure Wifi and 3G key to work with the unit in order to get constant software and maps updates on the go.
Will post some more info and photos if anyone is interested.