The ammeter is functioning properly. The schematic I saw said the oil, fuel, and temp gauges DO opperate sepparately from the ammeter, and are connected to the IVR. I pulled the cluster today, and tested a lot of stuff with my ohm meter including the IVR. it seems as tho it is not working properly, and is probably my problem. The gauges do move up a little in the run position, but do not read properly. I was thinking about getting some aftermarket gagues for the 3 that are not working.