While the aircraft is down, I decided to work on some of the squawks. One of them was an ammeter that didn't work. In working this problem, I discovered that the ammeter shunt had been placed in the wrong location to show battery charge/discharge. (Score another one to the guy who built the panel) So, I decided to put in a new shunt and new ammeter to fix things. Here's the new shunt properly located between the battery and the load/alternator input.