I'm in the process to install a Clarion NVS613 Navigation, can please some one direct me where is the speed signal, I know there is a wire at the rear of my radio but on an other forum they are saying that the speed signal is send in the CANBUS.
Hope some one can direct me in the right direction if there is a propre speed signal in the car to connect my NAV.SYS, or do I need to buy a CANBUS converter.
Please someone Help


Thanks