After a three day trip my battery died on the third day. When running at WOT the battery only showed 11.8 or less volts. The tachometer only works intermittently but stopped working all together so I figured it was the stator. I disconnected the battery and checked the stator wires and got 700+ on the green/green-white set and 1.2 on the yellow. So I checked the rectifier and I got nothing with testing both ways. Both tests were administered while still on the motor. Question 1) Do the parts need to be detached from the motor? Question 2). Would a bad rectifier keep the tach from working? I believe the gray wire coming from the rectifier is going to the tach. Just want to make sure I tested them correctly before I start buying parts. Thanks