Attempted to sort out the weird electrical issues today-no luck.
Also attempted to sort out the tach problem-no luck.
Finally I WAS able to get the engine running, and taxi the airplane up and down the runway a few times. I taxied over to Vic and Ellens and saw them, then I taxied past Norm and Carol's. I had the stereo on, but then it stopped playing and displayed "protect". On the up side the EGT and CHT appear to be working!