Amp gauge reading 25 amps charging

[sixt9rsx33]

I went back to the voltage regulator, and replaced the old style Delco Remy points style with the newer style from the parts store. With the car cold and with the battery charging I have 14.6 volts coming from the alternator. I drove the car approximately 7 miles and checked the voltage at the alternator. I had 13.5 volts coming from the alternator. Seems ok now. Of course the gauge is still off.

My temp gauge is still reading slightly higher than it should...like I have an over charge issue. I confirmed the temp is ok with a heat gun. I have 170* at the thermostat neck. When I run the car at a higher rpm but still in the City the gauge will go up. At idle the temp gauge comes back down. My lower radiator hose is new with a spring inside it. My water pump is new, the anti-freeze is new, the radiator looks ok. I have cleaned both ground wires on the radiator support. I have not gotten the car in the air to double confirm the starter wire hook ups. But I can see from under the hood that the purple wire is connected to the inboard connector.

Maybe the sending unit is wrong? It is new but who knows the calibration?

Thanks