Looking down at the module in the distributor with the module at the 12 O'clock position the left terminal is the VR+ and the right the VR- on the OEM VR pickup. For the CR125 you run +12V to the left terminal and the right terminal is the pickup, for it to work correctly you need to add a 1K resistor between the terminals, that acts as a 12V pull up to give a 12V square wave signal to the ECU.