You have a transformer input from the stator that comes to the rectifier via 2 yellow wires. Testing continuity between the wires going back to the stator should be low ohms (read the book for a value) between the wires. Between the wires and ground (battery - which is usually the engine block) you should have an open circuit. If you don't your input signal to the rectifier is shorted out.
Looking the other way, into the rectifier on the yellow leads, you have a diode function if you swap leads as there is a full wave bridge rectifier (4 diodes) and one has the anode connected to ground and the other side a cathode but the cathode connected diode has other things in the circuit to mess up the reading. After that you are at the mercy of the module since it's all potted up and no access points in the interim. Outputs are red for regulated power, grey for tach, and black for ground.
Looking back into the regulator between the red output and black you should read some impedance..read the book for the number.
On the two pins, I don't know which 2 pins you are talking about.
Does your tach work? If so that says the rectifier part of the module works which says your stator input signal is good. It counts the rectified half cycles coming from the rectifier. That makes it easy. Get another module.
