I am ready to install a MPGuino unit see MPGuino - EcoModder. One of the requirements is to input the VSS/mile into the MPGuino. I also need to know where to connect into the VSS and also into one of the injectors to get a pulse signal. I need to know which wire has the 0 voltage. Or, is there an output connector with all these signals available (my car has a 16pin connector above the battery can this be used?). Also how do I get form the engine bay through the firewall into the cabin with the cable to connect the MPGuino unit. I believe the injectors for this car are Bosch 0 280 155 209 units with 197.6cc/min is this correct?

Vehicle
E320 1995